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Chocolate is a food made from roasted and ground
cocoa bean The cocoa bean, also known as cocoa () or cacao (), is the dried and fully fermented seed of ''Theobroma cacao'', the cacao tree, from which cocoa solids (a mixture of nonfat substances) and cocoa butter (the fat) can be extracted. Cacao tree ...
s that can be a liquid, solid, or paste, either by itself or to flavor other foods. Cocoa beans are the processed seeds of the cacao tree (''
Theobroma cacao ''Theobroma cacao'' (cacao tree or cocoa tree) is a small ( tall) evergreen tree in the Malvaceae family. Its seedscocoa beansare used to make chocolate liquor, cocoa solids, cocoa butter and chocolate. Although the tree is native to the tropi ...
''); unprocessed, they taste intensely bitter. In making chocolate, these seeds are usually fermented to develop the flavor. They are then dried, cleaned, and roasted. The shell is removed to reveal nibs, which are ground to chocolate liquor: unadulterated chocolate in rough form. The liquor can be processed to separate its two components, cocoa solids and cocoa butter, or shaped and sold as unsweetened baking chocolate. By adding sugar, sweetened chocolates are produced, which can be sold simply as dark chocolate (a.k.a., plain chocolate), or, with the addition of
milk Milk is a white liquid food produced by the mammary glands of lactating mammals. It is the primary source of nutrition for young mammals (including breastfeeding, breastfed human infants) before they are able to digestion, digest solid food. ...
, can be made into milk chocolate. Making milk chocolate with cocoa butter and without cocoa solids produces white chocolate. In some chocolates, other ingredients such as vegetable oils, emulsifiers and flavorings are included. Chocolate is one of the most popular food types and flavors in the world, and many foodstuffs involving chocolate exist, particularly desserts, including cakes, mousse, and cookies. Many candies are filled with or coated with sweetened chocolate.
Chocolate bar A chocolate bar is a confection containing chocolate, which may also contain layerings or mixtures that include nut (fruit), nuts, fruit, caramel, nougat, and wafers. A flat, easily breakable, chocolate bar is also called a tablet. In some variet ...
s, either made of solid chocolate or other ingredients coated in chocolate, are eaten as snacks. Gifts of chocolate molded into different shapes (such as eggs, hearts, and coins) are traditional on certain Western holidays, including Christmas,
Easter Easter, also called Pascha ( Aramaic: פַּסְחָא , ''paskha''; Greek: πάσχα, ''páskha'') or Resurrection Sunday, is a Christian festival and cultural holiday commemorating the resurrection of Jesus from the dead, described in t ...
, Valentine's Day, and Hanukkah. Chocolate is also used in cold and hot beverages, such as chocolate milk, hot chocolate and chocolate liqueur. The cacao tree was first used as a source for food in what is today Ecuador at least 5,300 years ago.
Mesoamerica Mesoamerica is a historical region and cultural area that begins in the southern part of North America and extends to the Pacific coast of Central America, thus comprising the lands of central and southern Mexico, all of Belize, Guatemala, El S ...
n civilizations widely consumed cacao beverages, and in the 16th century, one of these beverages, chocolate, was introduced to Europe. Until the 19th century, chocolate was a drink consumed by societal elite. After then, technological and cocoa production changes led to chocolate becoming a solid, mass-consumed food. Today, the cocoa beans for most chocolate is produced in West African countries, particularly
Ivory Coast Ivory Coast, also known as Côte d'Ivoire and officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital city of Yamoussoukro is located in the centre of the country, while its largest List of ci ...
and
Ghana Ghana, officially the Republic of Ghana, is a country in West Africa. It is situated along the Gulf of Guinea and the Atlantic Ocean to the south, and shares borders with Côte d’Ivoire to the west, Burkina Faso to the north, and Togo to t ...
, which contribute about 60% of the world's cocoa supply. The presence of child labor, particularly child slavery and trafficking, in cocoa bean production in these countries has received significant media attention.


Etymology

''Chocolate'' is a Spanish
loanword A loanword (also a loan word, loan-word) is a word at least partly assimilated from one language (the donor language) into another language (the recipient or target language), through the process of borrowing. Borrowing is a metaphorical term t ...
, first recorded in English in 1604, and in Spanish in 1579. However, the word's origins beyond this are contentious. Despite a popular belief that ''chocolate'' derives from the
Nahuatl Nahuatl ( ; ), Aztec, or Mexicano is a language or, by some definitions, a group of languages of the Uto-Aztecan language family. Varieties of Nahuatl are spoken by about Nahuas, most of whom live mainly in Central Mexico and have smaller popul ...
word , early texts documenting the Nahuatl word for chocolate drink use a different term, '','' meaning "cacao water". Several alternatives have therefore been proposed. In one, chocolate is derived from the hypothetical Nahuatl word , meaning "bitter drink". Scholars
Michael Michael may refer to: People * Michael (given name), a given name * he He ..., a given name * Michael (surname), including a list of people with the surname Michael Given name * Michael (bishop elect)">Michael (surname)">he He ..., a given nam ...
and Sophie Coe consider this unlikely, saying that there is no clear reason why the 'sh' sound represented by 'x' would change to 'ch', or why an 'l' would be added. Another theory suggests that ''chocolate'' comes from ''chocolatl'', meaning 'hot water' in a Mayan language. However, there is no evidence of the form 'chocol' being used to mean hot. Despite the uncertainty about its Nahuatl origin, there is some agreement that chocolate likely derives from the Nawat word ''chikola:tl''. However, whether ''chikola:tl'' means 'cacao-beater' (referring to whisking cocoa to create foam), is contested, as the meaning of ''chico'' is unknown. According to anthropologist Kathryn Sampeck, chocolate originally referred to one cacao beverage among many, which included annatto and was made in what is today Guatemala. According to Sampeck, it became the generic word for cacao beverages , when the Izalcos from that area were the most notable producers of cacao.


History

Evidence for the domestication of the cacao tree exists as early as 5300 BP in
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...
, in present-day southeast
Ecuador Ecuador, officially the Republic of Ecuador, is a country in northwestern South America, bordered by Colombia on the north, Peru on the east and south, and the Pacific Ocean on the west. It also includes the Galápagos Province which contain ...
by the Mayo-Chinchipe culture, before it was introduced to
Mesoamerica Mesoamerica is a historical region and cultural area that begins in the southern part of North America and extends to the Pacific coast of Central America, thus comprising the lands of central and southern Mexico, all of Belize, Guatemala, El S ...
. It is unknown when chocolate was first consumed as opposed to other cacao-based drinks, and there is evidence the
Olmecs The Olmecs () or Olmec were an early known major Mesoamerican civilization, flourishing in the modern-day Mexican states of Veracruz and Tabasco from roughly 1200 to 400 Before the Common Era, BCE during Mesoamerica's Mesoamerican chronolog ...
, the earliest known major Mesoamerican civilization, fermented the sweet pulp surrounding the cacao beans into an
alcoholic beverage Drinks containing alcohol (drug), alcohol are typically divided into three classes—beers, wines, and Distilled beverage, spirits—with alcohol content typically between 3% and 50%. Drinks with less than 0.5% are sometimes considered Non-al ...
. Chocolate was extremely important to several Mesoamerican societies, and cacao was considered a gift from the gods by the Mayans and the Aztecs. The
cocoa bean The cocoa bean, also known as cocoa () or cacao (), is the dried and fully fermented seed of ''Theobroma cacao'', the cacao tree, from which cocoa solids (a mixture of nonfat substances) and cocoa butter (the fat) can be extracted. Cacao tree ...
was used as a currency across civilizations and was used in ceremonies, as a tribute to leaders and gods and as a medicine. Chocolate in Mesoamerica was a bitter drink, flavored with additives such as vanilla, earflower and chili, and was capped with a dark brown foam created by pouring the liquid from a height between containers. While Spanish
conquistador Conquistadors (, ) or conquistadores (; ; ) were Spanish Empire, Spanish and Portuguese Empire, Portuguese colonizers who explored, traded with and colonized parts of the Americas, Africa, Oceania and Asia during the Age of Discovery. Sailing ...
Hernán Cortés Hernán Cortés de Monroy y Pizarro Altamirano, 1st Marquis of the Valley of Oaxaca (December 1485 – December 2, 1547) was a Spanish ''conquistador'' who led an expedition that caused the fall of the Aztec Empire and brought large portions o ...
may have been the first European to encounter chocolate when he observed it in the court of Moctezuma II in 1520, it proved to be an acquired taste, and it took until 1585 for the first official recording of a shipment of cocoa beans to Europe. Chocolate was believed to be an aphrodisiac and medicine, and spread across Europe in the 17th century, sweetened, served warm and flavored with familiar spices. It was initially primarily consumed by the elite, with expensive cocoa supplied by colonial plantations in the Americas. In the 18th century, it was considered southern European, aristocratic and
Catholic The Catholic Church (), also known as the Roman Catholic Church, is the List of Christian denominations by number of members, largest Christian church, with 1.27 to 1.41 billion baptized Catholics Catholic Church by country, worldwid ...
and was still produced in a similar way to the way it had been produced by the Aztecs.Starting in the 18th century, chocolate production was improved. In the 19th century, engine-powered
milling Milling may refer to: * Milling (minting), forming narrow ridges around the edge of a coin * Milling (grinding), breaking solid materials into smaller pieces by grinding, crushing, or cutting in a mill * Milling (machining), a process of using ro ...
was developed, and in 1828, Coenraad Johannes van Houten received a patent for a process making Dutch cocoa. This removed cocoa butter from chocolate liquor (the product of milling), and permitted large scale production of chocolate. Other developments in the 19th century, including the '' melanger'' (a mixing machine), modern milk chocolate, the conching process to make chocolate smoother and change the flavor meant a worker in 1890 could produce fifty times more chocolate with the same labor than they could before the
Industrial Revolution The Industrial Revolution, sometimes divided into the First Industrial Revolution and Second Industrial Revolution, was a transitional period of the global economy toward more widespread, efficient and stable manufacturing processes, succee ...
, and chocolate became a food to be eaten rather than drunk. As production moved from the Americas to Asia and Africa, mass markets in Western nations for chocolate opened up. In the early 20th century, British chocolate producers including Cadbury and Fry's faced controversy over the labor conditions in the Portuguese cacao industry in Africa. A 1908 report by a Cadbury agent described conditions as "de facto slavery." While conditions somewhat improved with a boycott by chocolate makers, slave labor among African cacao growers again gained public attention in the early 21st century. During the 20th century, chocolate production further developed, with development of the tempering technique to improve the snap and gloss of chocolate and the addition of lecithin to improve texture and consistency.
White White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...
and couverture chocolate were developed in the 20th century and the bean-to-bar trade model began.


Types

Several types of chocolate can be distinguished. Pure, unsweetened chocolate, often called "baking chocolate", contains primarily cocoa solids and cocoa butter in varying proportions. Much of the chocolate consumed today is in the form of sweet chocolate, which combines chocolate with
sugar Sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food. Simple sugars, also called monosaccharides, include glucose Glucose is a sugar with the Chemical formula#Molecular formula, molecul ...
.


Eating chocolate

The traditional types of chocolate are dark,
milk Milk is a white liquid food produced by the mammary glands of lactating mammals. It is the primary source of nutrition for young mammals (including breastfeeding, breastfed human infants) before they are able to digestion, digest solid food. ...
and
white White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...
. All of them contain cocoa butter, which is the ingredient defining the physical properties of chocolate (consistency and melting temperature). Plain (or dark) chocolate, as it name suggests, is a form of chocolate that is similar to pure cocoa liquor, although is usually made with a slightly higher proportion of cocoa butter. It is simply defined by its cocoa percentage. In milk chocolate, the non-fat cocoa solids are partly or mostly replaced by milk solids. In white chocolate, they are all replaced by milk solids, hence its ivory color. Other forms of eating chocolate exist, these include raw chocolate (made with unroasted beans) and ruby chocolate. An additional popular form of eating chocolate, gianduja, is made by incorporating nut paste (typically hazelnut) to the chocolate paste.


Other types

Other types of chocolate are used in baking and confectionery. These include baking chocolate (often unsweetened), couverture chocolate (used for coating), compound chocolate (a lower-cost alternative) and modeling chocolate. Modeling chocolate is a chocolate paste made by melting chocolate and combining it with
corn syrup Corn syrup is a food syrup that is made from the starch of corn/maize and contains varying amounts of sugars: glucose, maltose and higher oligosaccharides, depending on the grade. Corn syrup is used in foods to soften Mouthfeel, texture, add vol ...
, glucose syrup, or golden syrup.


Cacao

Chocolate is made from cocoa beans, the dried and often fermented seeds of the cacao tree (''
Theobroma cacao ''Theobroma cacao'' (cacao tree or cocoa tree) is a small ( tall) evergreen tree in the Malvaceae family. Its seedscocoa beansare used to make chocolate liquor, cocoa solids, cocoa butter and chocolate. Although the tree is native to the tropi ...
''), a small, tall
evergreen In botany, an evergreen is a plant which has Leaf, foliage that remains green and functional throughout the year. This contrasts with deciduous plants, which lose their foliage completely during the winter or dry season. Consisting of many diffe ...
tree native to South America. The most common
genotype The genotype of an organism is its complete set of genetic material. Genotype can also be used to refer to the alleles or variants an individual carries in a particular gene or genetic location. The number of alleles an individual can have in a ...
originated in the
Amazon basin The Amazon basin is the part of South America drained by the Amazon River and its tributary, tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries ...
, and was gradually transported by humans throughout South and Central America. Early forms of another genotype have also been found in what is now Venezuela. The scientific name, '' Theobroma'', means "food of the gods". The fruit, called a cocoa pod, is ovoid, long and wide, ripening yellow to orange, and weighing about when ripe. Cacao trees are small, understory trees that need rich, well-drained soils. They naturally grow within 20° of either side of the equator because they need about 2000 mm of rainfall a year, and temperatures in the range of . Cacao trees cannot tolerate a temperature lower than . The genome of the cacao tree was sequenced in 2010. Traditionally, cacao was understood to be divided into three varieties: Criollo, Forastero, and Trinitario. New genetic research has not found a genetic backing for this division, and it has identified eleven genetic clusters.


Processing

Cocoa pods are harvested by cutting them from the tree using a machete, or by knocking them off the tree using a stick. Pods are harvested when they are ripe, as beans in unripe pods have a low cocoa butter content, or low sugar content, impacting the ultimate flavor.


Cocoa beans

The beans (which are sterile within their pods) and their surrounding pulp are removed from the pods and placed in piles or bins to ferment. Micro-organisms, present naturally in the environment, ferment the seeds.
Yeast Yeasts are eukaryotic, single-celled microorganisms classified as members of the fungus kingdom (biology), kingdom. The first yeast originated hundreds of millions of years ago, and at least 1,500 species are currently recognized. They are est ...
s produce
ethanol Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula . It is an Alcohol (chemistry), alcohol, with its formula also written as , or EtOH, where Et is the ps ...
, lactic acid bacteria produce lactic acid, and acetic acid bacteria produce
acetic acid Acetic acid , systematically named ethanoic acid , is an acidic, colourless liquid and organic compound with the chemical formula (also written as , , or ). Vinegar is at least 4% acetic acid by volume, making acetic acid the main compone ...
. The fermentation process, which takes up to seven days, produces several flavor precursors, that eventually provide the chocolate taste. After fermentation, the beans are dried to prevent mold growth. Where the weather permits it, this is done by spreading the beans out in the sun for five to seven days. The dried beans are then transported to a chocolate manufacturing facility. The beans are cleaned (removing twigs, stones, and other debris), roasted, and graded. Next, the shell of each bean is removed to extract the nib.


From nibs to chocolate

Next, the nibs are ground, producing chocolate liquor. The liquor can be further processed into cocoa solids and cocoa butter. The penultimate process is called conching. A conche is a container filled with metal beads, which act as grinders. The refined and blended chocolate mass is kept in a liquid state by frictional heat. Before conching, chocolate has an uneven and gritty texture. The conching process produces cocoa and sugar particles smaller than the tongue can detect (typically around 20 μm) and reduces rough edges, hence the smooth feel in the mouth. The length of the conching process determines the final smoothness and quality of the chocolate. After the process is complete, the chocolate mass is stored in tanks heated to about until final processing. After conching, chocolate is tempered to crystallize a small amount of fat, allowing the remaining fats to crystallize with an overall gloss. After chocolate has been tempered, it is molded into different shapes, including chocolate bars and chocolate chips.


Storage

Chocolate is very sensitive to temperature and humidity. Ideal storage temperatures are between , with a relative humidity of less than 50%. If refrigerated or frozen without containment, chocolate can absorb enough moisture to cause a whitish discoloration, the result of fat or sugar crystals rising to the surface. Various types of "blooming" effects can occur if chocolate is stored or served improperly. Chocolate bloom is caused by storage temperature fluctuating or exceeding , while sugar bloom is caused by temperature below or excess humidity. A fat bloom can be distinguished by touch; it disappears if the surface of affected chocolate is lightly rubbed. Although visually unappealing, chocolate suffering from bloom is safe for consumption and taste is unaffected. Bloom can be reversed by retempering the chocolate or using it for any use that requires melting the chocolate. Chocolate is generally stored away from other foods, as it can absorb aromas. To avoid this, chocolate is packed or wrapped, then stored in darkness, in ideal humidity and temperature conditions.


Health effects


Nutrition

One hundred grams of milk chocolate supplies 540 calories. It is 59%
carbohydrates A carbohydrate () is a biomolecule composed of carbon (C), hydrogen (H), and oxygen (O) atoms. The typical hydrogen-to-oxygen atomic ratio is 2:1, analogous to that of water, and is represented by the empirical formula (where ''m'' and ''n'' ma ...
(52% as
sugar Sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food. Simple sugars, also called monosaccharides, include glucose Glucose is a sugar with the Chemical formula#Molecular formula, molecul ...
and 3% as
dietary fiber Dietary fiber (fibre in English in the Commonwealth of Nations, Commonwealth English) or roughage is the portion of plant-derived food that cannot be completely broken down by human digestive enzymes. Dietary fibers are diverse in chemical co ...
), 30% fat and 8%
protein Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residue (biochemistry), residues. Proteins perform a vast array of functions within organisms, including Enzyme catalysis, catalysing metab ...
(table). Approximately 65% of the fat in milk chocolate is saturated, mainly
palmitic acid Palmitic acid (hexadecanoic acid in IUPAC nomenclature) is a fatty acid with a 16-carbon chain. It is the most common saturated fatty acid found in animals, plants and microorganisms.Gunstone, F. D., John L. Harwood, and Albert J. Dijkstra. The ...
and stearic acid, while the predominant unsaturated fat is
oleic acid Oleic acid is a fatty acid that occurs naturally in various animal and vegetable fats and oils. It is an odorless, colorless oil, although commercial samples may be yellowish due to the presence of impurities. In chemical terms, oleic acid is cl ...
(table). One hundred grams of milk chocolate is an ''excellent source'' (over 19% of the Daily Value, DV) of
riboflavin Riboflavin, also known as vitamin B2, is a vitamin found in food and sold as a dietary supplement. It is essential to the formation of two major coenzymes, flavin mononucleotide and flavin adenine dinucleotide. These coenzymes are involved in ...
,
vitamin B12 Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. One of eight B vitamins, it serves as a vital cofactor (biochemistry), cofactor in DNA synthesis and both fatty acid metabolism, fatty acid and amino a ...
and the
dietary minerals In the context of nutrition, a mineral is a chemical element. Some "minerals" are essential for life, but most are not. ''Minerals'' are one of the four groups of essential nutrients; the others are vitamins, essential fatty acids, and essen ...
manganese Manganese is a chemical element; it has Symbol (chemistry), symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese was first isolated in the 1770s. It is a transition m ...
,
phosphorus Phosphorus is a chemical element; it has Chemical symbol, symbol P and atomic number 15. All elemental forms of phosphorus are highly Reactivity (chemistry), reactive and are therefore never found in nature. They can nevertheless be prepared ar ...
and
zinc Zinc is a chemical element; it has symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic tabl ...
. Chocolate is a ''good source'' (10–19% DV) of calcium,
magnesium Magnesium is a chemical element; it has Symbol (chemistry), symbol Mg and atomic number 12. It is a shiny gray metal having a low density, low melting point and high chemical reactivity. Like the other alkaline earth metals (group 2 ...
and
iron Iron is a chemical element; it has symbol Fe () and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's o ...
.


Phytochemicals

Chocolate contains
polyphenol Polyphenols () are a large family of naturally occurring phenols. They are abundant in plants and structurally diverse. Polyphenols include phenolic acids, flavonoids, tannic acid, and ellagitannin, some of which have been used historically as ...
s, especially
flavan-3-ol Flavan-3-ols (sometimes referred to as flavanols) are a subgroup of flavonoids. They are derivatives of flavans that possess a 2-phenyl-3,4-dihydro-2''H''-chromen-3-ol skeleton. Flavan-3-ols are structurally diverse and include a range of compo ...
s (catechins) and smaller amounts of other
flavonoid Flavonoids (or bioflavonoids; from the Latin word ''flavus'', meaning yellow, their color in nature) are a class of polyphenolic secondary metabolites found in plants, and thus commonly consumed in the diets of humans. Chemically, flavonoids ...
s. It also contains
alkaloid Alkaloids are a broad class of natural product, naturally occurring organic compounds that contain at least one nitrogen atom. Some synthetic compounds of similar structure may also be termed alkaloids. Alkaloids are produced by a large varie ...
s, such as theobromine, phenethylamine, and
caffeine Caffeine is a central nervous system (CNS) stimulant of the methylxanthine chemical classification, class and is the most commonly consumed Psychoactive drug, psychoactive substance globally. It is mainly used for its eugeroic (wakefulness pr ...
, which are under study for their potential effects in the body.


Heavy metals

It is unlikely that chocolate consumption in small amounts causes
lead poisoning Lead poisoning, also known as plumbism and saturnism, is a type of metal poisoning caused by lead in the body. Symptoms may include abdominal pain, constipation, headaches, irritability, memory problems, infertility, numbness and paresthesia, t ...
. Some studies have shown that lead may bind to cocoa shells, and contamination may occur during the manufacturing process. One study showed the mean lead level in milk chocolate candy bars was 0.027 μg lead per gram of candy; another study found that some chocolate purchased at U.S.
supermarket A supermarket is a self-service Retail#Types of outlets, shop offering a wide variety of food, Drink, beverages and Household goods, household products, organized into sections. Strictly speaking, a supermarket is larger and has a wider selecti ...
s contained up to 0.965 μg per gram, close to the international (voluntary) standard limit for lead in cocoa powder or beans, which is 1 μg of lead per gram. In 2006, the U.S. FDA lowered by one-fifth the amount of lead permissible in candy, but compliance is only voluntary. Studies concluded that "children, who are big consumers of chocolates, may be at risk of exceeding the daily limit of lead, sone 10 g cube of dark chocolate may contain as much as 20% of the daily lead oral limit. Moreover chocolate may not be the only source of lead in their nutrition" and "chocolate might be a significant source of cadmium and lead ingestion, particularly for children." According to a 2005 study, the average
lead Lead () is a chemical element; it has Chemical symbol, symbol Pb (from Latin ) and atomic number 82. It is a Heavy metal (elements), heavy metal that is density, denser than most common materials. Lead is Mohs scale, soft and Ductility, malleabl ...
concentration of cocoa beans is ≤ 0.5 ng/g, which is one of the lowest reported values for a natural food. However, during cultivation and production, chocolate may absorb lead from the environment (such as in atmospheric emissions of now unused leaded gasoline). The European Food Safety Authority recommended a tolerable weekly intake for cadmium of 2.5 micrograms per kg of body weight for Europeans, indicating that consuming chocolate products caused exposure of about 4% among all foods eaten. Maximum levels for baby foods and chocolate/cocoa products were established under Commission Regulation (EU) No 488/2014. 1986 California Proposition 65 requires a warning label on chocolate products having more than 4.1 mg of cadmium per daily serving of a single product.


Caffeine

One tablespoonful (5 grams) of dry unsweetened cocoa powder has 12.1 mg of caffeine and a 25-g single serving of dark chocolate has 22.4 mg of caffeine. This is much less than the amount found in coffee, of which a single 7 oz. (200 ml) serving may contain 80–175 mg of caffeine, though studies have shown psychoactive effects in caffeine doses as low as 9 mg, and a dose as low as 12.5 mg was shown to have effects on cognitive performance.


Theobromine and oxalate

Chocolate may be a factor for
heartburn Heartburn is a burning sensation felt behind the breastbone. It is a symptom that is commonly linked to acid reflux and is often triggered by food, particularly fatty, sugary, spicy, chocolate, citrus, onion-based and tomato-based products. Ly ...
in some people because one of its constituents, theobromine, may affect the esophageal sphincter muscle in a way that permits stomach acids to enter the
esophagus The esophagus (American English), oesophagus (British English), or œsophagus (Œ, archaic spelling) (American and British English spelling differences#ae and oe, see spelling difference) all ; : ((o)e)(œ)sophagi or ((o)e)(œ)sophaguses), c ...
. Theobromine poisoning is an overdosage reaction to the bitter alkaloid, which happens more frequently in domestic animals than humans. However, daily intake of 50–100 g cocoa (0.8–1.5 g theobromine) by humans has been associated with sweating, trembling, and severe headache. Chocolate and cocoa contain moderate to high amounts of oxalate, which may increase the risk of kidney stones.


Non-human animals

In sufficient amounts, the theobromine found in chocolate is toxic to animals such as cats, dogs, horses, parrots, and small rodents because they are unable to metabolize the chemical effectively. If animals are fed chocolate, the theobromine may remain in the circulation for up to 20 hours, possibly causing epileptic seizures,
heart attacks A myocardial infarction (MI), commonly known as a heart attack, occurs when blood flow decreases or stops in one of the coronary arteries of the heart, causing infarction (tissue death) to the heart muscle. The most common symptom is retr ...
, internal bleeding, and eventually death. Medical treatment performed by a
veterinarian A veterinarian (vet) or veterinary surgeon is a medical professional who practices veterinary medicine. They manage a wide range of health conditions and injuries in non-human animals. Along with this, veterinarians also play a role in animal r ...
involves inducing
vomiting Vomiting (also known as emesis, puking and throwing up) is the forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose. Vomiting can be the result of ailments like food poisoning, gastroenteritis, pre ...
within two hours of ingestion and administration of
benzodiazepine Benzodiazepines (BZD, BDZ, BZs), colloquially known as "benzos", are a class of central nervous system (CNS) depressant, depressant drugs whose core chemical structure is the fusion of a benzene ring and a diazepine ring. They are prescribed t ...
s or barbiturates for seizures, antiarrhythmics for heart arrhythmias, and fluid diuresis. A typical dog will normally experience great intestinal distress after eating less than of dark chocolate, but will not necessarily experience bradycardia or tachycardia unless it eats at least a half a kilogram (1.1 lb) of milk chocolate. Dark chocolate has 2 to 5 times more theobromine and thus is more dangerous to dogs. According to the
Merck Veterinary Manual The ''Merck Veterinary Manual'' is a reference manual of animal health care. It was first published by Merck & Co., Inc. in 1955. It contains concise, thorough information on the diagnosis and treatment of disease in a wide variety of species. T ...
, approximately 1.3 grams of baker's chocolate per kilogram of a dog's body weight (0.02 oz/lb) is sufficient to cause symptoms of toxicity. For example, a typical baker's chocolate bar would be enough to bring about symptoms in a dog. In the 20th century, there were reports that
mulch A mulch is a layer of material applied to the surface of soil. Reasons for applying mulch include conservation of soil moisture, improving soil fertility, fertility and health of the soil, reducing Weed control, weed growth, and enhancing the v ...
made from cocoa bean shells is dangerous to dogs and livestock.


Research

Commonly consumed chocolate is high in fat and
sugar Sugar is the generic name for sweet-tasting, soluble carbohydrates, many of which are used in food. Simple sugars, also called monosaccharides, include glucose Glucose is a sugar with the Chemical formula#Molecular formula, molecul ...
, which are associated with an increased risk for
obesity Obesity is a medical condition, considered by multiple organizations to be a disease, in which excess Adipose tissue, body fat has accumulated to such an extent that it can potentially have negative effects on health. People are classifi ...
when chocolate is consumed in excess. Overall evidence is insufficient to determine the relationship between chocolate consumption and
acne Acne ( ), also known as ''acne vulgaris'', is a long-term Cutaneous condition, skin condition that occurs when Keratinocyte, dead skin cells and Sebum, oil from the skin clog hair follicles. Typical features of the condition include comedo, ...
. Various studies point not to chocolate, but to the high
glycemic The glycemic response (or glycaemic response) to a food or meal is the effect that food or meal has on blood sugar (glucose) levels after consumption.Sadler M. Food, Glycaemic Response and Health. ILSI Europe Concise Monograph Series 2011:1-30Av ...
nature of certain foods, like sugar, corn syrup, and other simple carbohydrates, as potential causes of acne, along with other possible dietary factors. Food, including chocolate, is not typically viewed as addictive. Some people, however, may want or crave chocolate, leading to a self-described term, ''chocoholic''. By some popular myths, chocolate is considered to be a mood enhancer, such as by increasing sex drive or stimulating
cognition Cognition is the "mental action or process of acquiring knowledge and understanding through thought, experience, and the senses". It encompasses all aspects of intellectual functions and processes such as: perception, attention, thought, ...
, but there is little scientific evidence that such effects are consistent among all chocolate consumers. If mood improvement from eating chocolate occurs, there is not enough research to indicate whether it results from the favorable flavor or from the
stimulant Stimulants (also known as central nervous system stimulants, or psychostimulants, or colloquially as uppers) are a class of drugs that increase alertness. They are used for various purposes, such as enhancing attention, motivation, cognition, ...
effects of its constituents, such as caffeine, theobromine, or their parent molecule, methylxanthine. A 2019 review reported that chocolate consumption does not improve depressive mood. Reviews support a short-term effect of lowering blood pressure by consuming cocoa products, but there is no evidence of long-term cardiovascular health benefit. Chocolate and cocoa are under preliminary research to determine if consumption affects the risk of certain cardiovascular diseases or enhances cognitive abilities. While daily consumption of cocoa flavanols (minimum dose of 200 mg) appears to benefit
platelet Platelets or thrombocytes () are a part of blood whose function (along with the coagulation#Coagulation factors, coagulation factors) is to react to bleeding from blood vessel injury by clumping to form a thrombus, blood clot. Platelets have no ...
and vascular function, there is no good evidence to indicate an effect on
heart attack A myocardial infarction (MI), commonly known as a heart attack, occurs when Ischemia, blood flow decreases or stops in one of the coronary arteries of the heart, causing infarction (tissue death) to the heart muscle. The most common symptom ...
s or
stroke Stroke is a medical condition in which poor cerebral circulation, blood flow to a part of the brain causes cell death. There are two main types of stroke: brain ischemia, ischemic, due to lack of blood flow, and intracranial hemorrhage, hemor ...
s. Research has also shown that consuming dark chocolate does not substantially affect
blood pressure Blood pressure (BP) is the pressure of Circulatory system, circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term ...
.


Labeling

Some manufacturers provide the percentage of chocolate in a finished chocolate confection as a label quoting percentage of "cocoa" or "cacao". This refers to the combined percentage of both cocoa solids and cocoa butter in the bar, not just the percentage of cocoa solids. The Belgian AMBAO certification mark indicates that no non-cocoa vegetable fats have been used in making the chocolate. A long-standing dispute between Britain on the one hand and Belgium and France over British use of vegetable fats in chocolate ended in 2000 with the adoption of new standards which permitted the use of up to five percent vegetable fats in clearly labelled products. Chocolates that are organic or fair trade certified carry labels accordingly.


Legal definitions

In the US, the Food and Drug Administration does not allow a product to be referred to as "chocolate" if the product contains any of these ingredients. In the EU a product can be sold as chocolate if it contains up to 5% vegetable oil, and must be labeled as "family milk chocolate" rather than "milk chocolate" if it contains 20% milk. According to Canadian Food and Drug Regulations, a "chocolate product" is a food product that is sourced from at least one "cocoa product" and contains at least one of the following: "chocolate, bittersweet chocolate, semi-sweet chocolate, dark chocolate, sweet chocolate, milk chocolate, or white chocolate". A "cocoa product" is defined as a food product that is sourced from cocoa beans and contains "cocoa nibs, cocoa liquor, cocoa mass, unsweetened chocolate, bitter chocolate, chocolate liquor, cocoa, low-fat cocoa, cocoa powder, or low-fat cocoa powder".


Industry

Chocolate is a steadily growing, US$50 billion-a-year worldwide business as of 2009. As of 2006, Europe accounted for 45% of the world's chocolate revenue, and the US spent $20 billion in 2013. Big Chocolate is a grouping of major international chocolate companies in Europe and the US. In 2004, Mars and Hershey's alone accounted for two-thirds of US production. As of 2007, roughly two-thirds of the world's cocoa was produced in West Africa, with 43% sourced from Ivory Coast, which commonly used child labor. That year some 50 million people around the world depended on cocoa as a source of livelihood. in the UK, most chocolatiers purchase their chocolate from them, to melt, mold and package to their own design. As of 2012, the
Ivory Coast Ivory Coast, also known as Côte d'Ivoire and officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital city of Yamoussoukro is located in the centre of the country, while its largest List of ci ...
is the largest producer of cocoa in the world. The two main jobs associated with creating chocolate candy are chocolate makers and chocolatiers. Chocolate makers use harvested cocoa beans and other ingredients to produce couverture chocolate (covering). Chocolatiers use the finished couverture to make chocolate candies (bars, truffles, etc.). Production costs can be decreased by reducing cocoa solids content or by substituting cocoa butter with another fat. Cocoa growers object to allowing the resulting food to be called "chocolate", due to the risk of lower demand for their crops.


Manufacturers

Chocolate manufacturers produce a range of products from chocolate bars to fudge. Large manufacturers of chocolate products include Cadbury, Ferrero, Guylian,
The Hershey Company The Hershey Company, often called just Hershey or Hershey's, is an American multinational corporation, multinational confectionery company headquartered in Hershey, Pennsylvania, which is also home to Hersheypark and Hershey's Chocolate World. T ...
, Lindt & Sprüngli, Mars, Incorporated, Milka, Neuhaus and Suchard. Guylian is best known for its chocolate sea shells; Cadbury for its Dairy Milk and Creme Egg. The Hershey Company, the largest chocolate manufacturer in North America, produces the Hershey Bar and Hershey's Kisses. Mars Incorporated, a large privately owned U.S. corporation, produces Mars Bar,
Milky Way The Milky Way or Milky Way Galaxy is the galaxy that includes the Solar System, with the name describing the #Appearance, galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars in other arms of the galax ...
, M&M's, Twix, and
Snickers Snickers (stylized in all caps) is a chocolate bar consisting of nougat topped with Caramel#Candy, caramel and peanuts, all encased in milk chocolate. The bars are made by the American company Mars Inc. The annual global sales of Snickers is ...
. Lindt is known for its truffle balls and gold foil-wrapped Easter bunnies. Food conglomerates
Nestlé Nestlé S.A. ( ) is a Swiss multinational food and drink processing conglomerate corporation headquartered in Vevey, Switzerland. It has been the largest publicly held food company in the world, measured by revenue and other metrics, since 20 ...
SA and Mondelēz both have chocolate brands. Nestlé acquired Rowntree's in 1988 and now markets chocolates under their brand, including Smarties (a chocolate candy) and Kit Kat (a chocolate bar); Kraft Foods through its 1990 acquisition of Jacobs Suchard, now owns Milka and Suchard. Fry's, Trebor Basset and the fair trade brand Green & Black's also belongs to the group.


Child labor in cocoa harvesting

The widespread use of children in cocoa production is controversial, not only for the concerns about child labor and exploitation, but also because according to a 2002 estimate, up to 12,000 of the 200,000 children then working in the
Ivory Coast Ivory Coast, also known as Côte d'Ivoire and officially the Republic of Côte d'Ivoire, is a country on the southern coast of West Africa. Its capital city of Yamoussoukro is located in the centre of the country, while its largest List of ci ...
cocoa industry may have been victims of
trafficking Smuggling is the illegal transportation of objects, substances, information or people, such as out of a house or buildings, into a prison, or across an international border, in violation of applicable laws or other regulations. More broadly, soc ...
or
slavery Slavery is the ownership of a person as property, especially in regards to their labour. Slavery typically involves compulsory work, with the slave's location of work and residence dictated by the party that holds them in bondage. Enslavemen ...
. Most attention on this subject has focused on
West Africa West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Gha ...
, which collectively supplies 69 percent of the world's cocoa, and the Ivory Coast in particular, which supplies 35 percent of the world's cocoa. Thirty percent of children under age 15 in
sub-Saharan Africa Sub-Saharan Africa is the area and regions of the continent of Africa that lie south of the Sahara. These include Central Africa, East Africa, Southern Africa, and West Africa. Geopolitically, in addition to the list of sovereign states and ...
are child laborers, mostly in agricultural activities including cocoa farming. Major chocolate producers, such as
Nestlé Nestlé S.A. ( ) is a Swiss multinational food and drink processing conglomerate corporation headquartered in Vevey, Switzerland. It has been the largest publicly held food company in the world, measured by revenue and other metrics, since 20 ...
, buy cocoa at commodities exchanges where Ivorian cocoa is mixed with other cocoa. As of 2017, approximately 2.1 million children in Ghana and Ivory Coast were involved in farming cocoa, carrying heavy loads, clearing forests, and being exposed to pesticides. As of 2018, a 3-year
pilot program A pilot experiment, pilot study, pilot test or pilot project is a small-scale preliminary study conducted to evaluate feasibility, duration, cost, adverse events, and improve upon the study design prior to performance of a full-scale research ...
– conducted by Nestlé with 26,000 farmers mostly located in Ivory Coast – observed a 51% decrease in the number of children doing hazardous jobs in cocoa farming. The US Department of Labor formed the Child Labor Cocoa Coordinating Group as a public-private partnership with the governments of Ghana and Ivory Coast to address child labor practices in the cocoa industry. The International Cocoa Initiative involving major cocoa manufacturers established the Child Labor Monitoring and Remediation System to monitor thousands of farms in Ghana and Ivory Coast for child labor conditions, but the program reached less than 20% of the child laborers. In April 2018, the Cocoa Barometer report stated: "Not a single company or government is anywhere near reaching the sector-wide objective of the elimination of child labor, and not even near their commitments of a 70% reduction of child labor by 2020". They cited persistent poverty, the absence of schools, increasing world cocoa demand, more
intensive farming Intensive agriculture, also known as intensive farming (as opposed to extensive farming), conventional, or industrial agriculture, is a type of agriculture, both of arable farming, crop plants and of Animal husbandry, animals, with higher levels ...
of cocoa, and continued exploitation of child labor.


Fair trade

In the 2000s, some chocolate producers began to engage in fair trade initiatives, to address concerns about the low pay of cocoa laborers in developing countries. Traditionally, Africa and other developing countries received low prices for their exported commodities such as cocoa, which caused poverty. Fairtrade seeks to establish a system of direct trade from developing countries to counteract this system. One solution for fair labor practices is for farmers to become part of an agricultural cooperative. Cooperatives pay farmers a fair price for their cocoa so farmers have enough money for food, clothes, and school fees. One of the main tenets of fair trade is that farmers receive a fair price, but this does not mean that the larger amount of money paid for fair trade cocoa goes directly to the farmers. The effectiveness of fair trade has been questioned. In a 2014 article, ''
The Economist ''The Economist'' is a British newspaper published weekly in printed magazine format and daily on Electronic publishing, digital platforms. It publishes stories on topics that include economics, business, geopolitics, technology and culture. M ...
'' stated that workers on fair trade farms have a lower standard of living than on similar farms outside the fair trade system based on a study of tea and coffee farmers in Uganda and Ethiopia.


Usage and consumption

Chocolate is sold in chocolate bars, which come in dark chocolate, milk chocolate and white chocolate varieties. Some bars that are mostly chocolate have other ingredients blended into the chocolate, such as nuts, raisins, or crisped rice. Chocolate is used as an ingredient in a huge variety of bars, which typically contain various confectionary ingredients (e.g., nougat, wafers, caramel, nuts, etc.) which are coated in chocolate. Chocolate is used as a flavoring product in many desserts, such as chocolate cakes, chocolate brownies, chocolate mousse and chocolate chip cookies. Numerous types of
candy Candy, alternatively called sweets or lollies, is a Confectionery, confection that features sugar as a principal ingredient. The category, also called ''sugar confectionery'', encompasses any sweet confection, including chocolate, chewing gum ...
and
snack A snack is a small portion of Human food, food generally Eating, eaten between meals. Snacks come in a variety of forms including Food packaging, packaged snack foods and other processed foods, as well as items made from fresh ingredients at ho ...
s contain chocolate, either as a filling (e.g., M&M's) or as a coating (e.g., chocolate-coated raisins or chocolate-coated peanuts). Some non-alcoholic beverages contain chocolate, such as chocolate milk, hot chocolate, chocolate milkshakes and tejate. Some alcoholic liqueurs are flavored with chocolate, such as chocolate liqueur and crème de cacao. Chocolate is a popular flavor of ice cream and pudding, and chocolate sauce is a commonly added as a topping on ice cream sundaes. The caffè mocha is an espresso beverage containing chocolate.


Eating experience

The experience of eating chocolate varies with the ingredients used. More sugary chocolates have a flavor that is more immediately apparent, while chocolates with higher cocoa percentages have flavors that take longer to be perceived but stay on the palate for longer. These chocolates with more cocoa are increasingly bitter.


Society and culture

Chocolate is perceived to be different things at different times, including a sweet treat, a luxury product, a consumer good and a mood enhancer, the latter reputation in part driven by marketing. Chocolate is a popular metaphor for the black racial category. It has connotations of transgression and sexuality and is gendered as feminine. In the US there is a cultural practice of women consuming chocolate in secret; alone and with other women. Children use chocolate as a euphemism for feces. Chocolate is popularly understood to have "exotic" origins, In China, chocolate is considered " heaty", and avoided in hot weather. Chocolate is associated with festivals such as
Easter Easter, also called Pascha ( Aramaic: פַּסְחָא , ''paskha''; Greek: πάσχα, ''páskha'') or Resurrection Sunday, is a Christian festival and cultural holiday commemorating the resurrection of Jesus from the dead, described in t ...
, when molded chocolate rabbits and eggs are traditionally given in Christian communities, and Hanukkah, when chocolate coins are given in Jewish communities. Chocolate hearts and chocolate in heart-shaped boxes are popular on
Valentine's Day Valentine's Day, also called Saint Valentine's Day or the Feast of Saint Valentine, is celebrated annually on February 14. It originated as a Christian feast day honoring a Christian martyrs, martyr named Saint Valentine, Valentine, and ...
and are often presented along with flowers and a greeting card Boxes of filled chocolates quickly became associated with the holiday. Chocolate is an acceptable gift on other holidays and on occasions such as birthdays. Many confectioners make holiday-specific chocolate candies. Chocolate Easter eggs or rabbits and
Santa Claus Santa Claus (also known as Saint Nicholas, Saint Nick, Father Christmas, Kris Kringle or Santa) is a legendary figure originating in Western Christian culture who is said to bring gifts during the late evening and overnight hours on Chris ...
figures are two examples. Such confections can be solid, hollow, or filled with sweets or fondant. In 1964,
Roald Dahl Roald Dahl (13 September 1916 – 23 November 1990) was a British author of popular children's literature and short stories, a poet, screenwriter and a wartime Flying ace, fighter ace. His books have sold more than 300 million copies ...
published a children's novel titled '' Charlie and the Chocolate Factory''. The novel centers on a poor boy named Charlie Bucket who takes a tour through the greatest chocolate factory in the world, owned by the eccentric Willy Wonka. Two film adaptations of the novel were produced: '' Willy Wonka & the Chocolate Factory'' (1971) and '' Charlie and the Chocolate Factory'' (2005). A third adaptation, an origin prequel film titled '' Wonka'', was released in 2023. '' Chocolat'', a 1999 novel by Joanne Harris, was adapted for film in '' Chocolat'' which was released a year later. Some artists have utilized chocolate in their art; Dieter Roth was influential in this beginning with his works in the 1960s casting human and animal figures in chocolate, which used the chocolate's inevitable decay to comment on contemporary attitudes towards the permanence of museum displays. Other works have played on the audience's ability to consume displayed chocolate, encouraged in Sonja Alhäuser's ''Exhibition Basics'' (2001) and painfully disallowed in Edward Ruscha's '' Chocolate Room'' (1970). In the 1980s and 90s, performance artists Karen Finley and Janine Antoni used chocolate's cultural popular associations of excrement and consumption, and desirability respectively to comment on the status of women in society.


Flavors

Mint chocolate (or chocolate mint) is a popular flavor of chocolate, made by adding a mint flavoring, such as peppermint, spearmint, or crème de menthe, to chocolate. Mint chocolate can be found in a wide variety of confectionery items, such as
candy Candy, alternatively called sweets or lollies, is a Confectionery, confection that features sugar as a principal ingredient. The category, also called ''sugar confectionery'', encompasses any sweet confection, including chocolate, chewing gum ...
, mints, cookies, mint chocolate chip ice cream, hot chocolate, and others. In addition, it is marketed in a non-edible format as
cosmetics Cosmetics are substances that are intended for application to the body for cleansing, beautifying, promoting attractiveness, or altering appearance. They are mixtures of chemical compounds derived from either Natural product, natural source ...
. Depending widely on the ingredients and the process used, mint chocolate can give off a very distinctive mint fragrance. The chocolate component can be milk chocolate, regular dark chocolate, or white chocolate; due to this, mint chocolate has no one specific flavour, and so each chocolate-plus-flavor combination can be unique. The U.S. National Confectioners Association lists February 19 as "Chocolate Mint Day".


See also

* Candy making * Glossary of chocolate terms * List of chocolate-covered foods * List of chocolate beverages * List of chocolate companies


References


Sources


Books

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Journal articles

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Webpages

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Further reading

* Norton, Marcy. ''Sacred Gifts, Profane Pleasures: A History of Tobacco and Chocolate in the Atlantic World'' (Cornell UP, 2008) * * * Ryan, Órla (2011). ''Chocolate Nations: Living and Dying for Cocoa in West Africa''. Zed Books. * Young, Allen M. (2007). ''The Chocolate Tree: A Natural History of Cacao'' (Rev. and expanded ed.). University Press of Florida.


External links

* * * * * * {{Authority control Aphrodisiac foods Articles containing video clips Baking Candy Cooking Desserts Mesoamerican cuisine Mexican cuisine Snack foods