Ice Cream
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Ice cream is a frozen dessert typically made from
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. ...
or
cream Cream is a dairy product composed of the higher-fat layer skimmed from the top of milk before homogenization. In un-homogenized milk, the fat, which is less dense, eventually rises to the top. In the industrial production of cream, this proces ...
that has been flavoured with a sweetener, either
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 ...
or an alternative, and a
spice In the culinary arts, a spice is any seed, fruit, root, Bark (botany), bark, or other plant substance in a form primarily used for flavoring or coloring food. Spices are distinguished from herbs, which are the leaves, flowers, or stems of pl ...
, such as cocoa or
vanilla Vanilla is a spice derived from orchids of the genus ''Vanilla (genus), Vanilla'', primarily obtained from pods of the flat-leaved vanilla (''Vanilla planifolia, V. planifolia''). ''Vanilla'' is not Autogamy, autogamous, so pollination ...
, or with fruit, such as strawberries or peaches. Food colouring is sometimes added in addition to stabilizers. The mixture is cooled below the freezing point of water and stirred to incorporate air spaces and prevent detectable
ice crystals Ice crystals are solid water (known as ice) in crystal structure, symmetrical shapes including hexagonal crystal family, hexagonal columns, hexagonal plates, and dendrite (crystal), dendritic crystals. Ice crystals are responsible for various at ...
from forming. It can also be made by whisking a flavoured cream base and
liquid nitrogen Liquid nitrogen (LN2) is nitrogen in a liquid state at cryogenics, low temperature. Liquid nitrogen has a boiling point of about . It is produced industrially by fractional distillation of liquid air. It is a colorless, mobile liquid whose vis ...
together. The result is a smooth, semi-solid
foam Foams are two-phase materials science, material systems where a gas is dispersed in a second, non-gaseous material, specifically, in which gas cells are enclosed by a distinct liquid or solid material. Note, this source focuses only on liquid ...
that is solid at very low temperatures (below ). It becomes more malleable as its temperature increases. Ice cream may be served in dishes, eaten with a spoon, or licked from edible wafer ice cream cones held by the hands as
finger food Finger foods are small, individual portions of food that are eaten out of hand. They are often served at social events. The ideal finger food usually does not create any mess (such as crumbs or drips), but this criterion is often overlooked in o ...
. Ice cream may be served with other desserts—such as
cake Cake is a flour confection usually made from flour, sugar, and other ingredients and is usually baked. In their oldest forms, cakes were modifications of bread, but cakes now cover a wide range of preparations that can be simple or elabor ...
or pie—or used as an ingredient in cold dishes—like ice cream floats, sundaes,
milkshake A milkshake (sometimes simply called a shake) is a sweet beverage made by blending milk, ice cream, and flavorings or sweeteners such as butterscotch, caramel sauce, chocolate syrup, or fruit syrup into a thick, sweet, cold mixture. It may ...
s, and ice cream cakes—or in baked items such as Baked Alaska. Italian ice cream is
gelato Gelato (; ; ) refers to a specific type of ice cream of Italian origin. In Italian, ''Gelato'' is the common word for all types of ice cream. Artisanal gelato in Italy generally contains 6–9% butterfat, which is lower than other styles of ...
. Frozen custard is a type of rich ice cream. Soft serve is softer and is often served at amusement parks and fast-food restaurants in the United States. Ice creams made from cow's milk alternatives, such as goat's or
sheep's milk Sheep milk is the milk of Sheep, domestic sheep. It is commonly used to make cultured Dairy product, dairy products, such as cheese. Some of the most popular sheep cheeses include feta (Greece), pecorino romano (Italy), Roquefort (France) and Ma ...
, or milk substitutes (e.g., soy, oat,
cashew Cashew is the common name of a tropical evergreen tree ''Anacardium occidentale'', in the family Anacardiaceae. It is native to South America and is the source of the cashew nut and the cashew apple, an accessory fruit. The tree can grow as t ...
,
coconut The coconut tree (''Cocos nucifera'') is a member of the palm tree family (biology), family (Arecaceae) and the only living species of the genus ''Cocos''. The term "coconut" (or the archaic "cocoanut") can refer to the whole coconut palm, ...
, almond milk, or
tofu or bean curd is a food prepared by Coagulation (milk), coagulating soy milk and then pressing the resulting curds into solid white blocks of varying softness: ''silken'', ''soft'', ''firm'', and ''extra (or super) firm''. It originated in Chin ...
), are available for those who are lactose intolerant, allergic to dairy protein, or
vegan Veganism is the practice of abstaining from the use of animal products and the consumption of animal source foods, and an associated philosophy that rejects the commodity status of animals. A person who practices veganism is known as a ve ...
.
Banana A banana is an elongated, edible fruit – botanically a berry – produced by several kinds of large treelike herbaceous flowering plants in the genus '' Musa''. In some countries, cooking bananas are called plantains, distinguishing the ...
"nice cream" is a 100% fruit-based vegan alternative. Frozen yoghurt, or "froyo", is similar to ice cream but uses yoghurt and can be lower in fat. Fruity sorbets or sherbets are not ice creams but are often available in ice cream shops. The meaning of the name ''ice cream'' varies from one country to another. In some countries, such as the United States and the United Kingdom, ''ice cream'' applies only to a specific variety, and most governments regulate the commercial use of the various terms according to the relative quantities of the main ingredients, notably the amount of cream. Products that do not meet the criteria to be called ice cream are sometimes labelled "frozen dairy dessert" instead. In other countries, such as Italy and Argentina, one word is used for all variants.


History


Early frozen desserts

The origins of frozen desserts are obscure, although several accounts exist about their history. Some sources say the history of ice cream begins in
Persia Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...
in 550 BC. A Roman cookbook dating back to the 1st century includes recipes for sweet desserts that are sprinkled with snow, and there are Persian records from the 2nd century for sweetened drinks chilled with ice. is a Japanese dessert made with ice and flavoured syrup. The origins of date back to the
Heian period The is the last division of classical Japanese history, running from 794 to 1185. It followed the Nara period, beginning when the 50th emperor, Emperor Kammu, moved the capital of Japan to Heian-kyō (modern Kyoto). means in Japanese. It is a ...
in Japanese history, when blocks of ice saved during the colder months would be shaved and served with sweet syrup to the Japanese aristocracy during the summer. 's origin is referred to in ''
The Pillow Book is a book of observations and musings recorded by Sei Shōnagon during her time as court lady to Fujiwara no Teishi, Empress Consort Teishi during the 990s and early 1000s in Heian-period Japan. The book was completed in the year 1002. The wor ...
'', a book of observations written by
Sei Shōnagon , or , was a Japanese author, poet, and court lady who served the Empress Teishi (Sadako) around the year 1000, during the middle Heian period. She is the author of . Name Sei Shōnagon's actual given name is not known. It was the custom amon ...
, who served the Imperial Court during the Heian period. The earliest known written process to artificially make ice is known not from culinary texts, but the 13th-century writings of Syrian historian Ibn Abi Usaybi'a in his book "Kitab Uyun al-anba fi tabaqat-al-atibba" (Book of Sources of Information on the Classes of Physicians) concerning medicine in which Ibn Abi Usaybi'a attributes the process to an even older author, Ibn Bakhtawayhi, of whom nothing is known. Ice cream production became easier with the discovery of the
endothermic An endothermic process is a chemical or physical process that absorbs heat from its surroundings. In terms of thermodynamics, it is a thermodynamic process with an increase in the enthalpy (or internal energy ) of the system.Oxtoby, D. W; Gillis, ...
effect. Prior to this, cream could be chilled easily but not frozen. The addition of salt lowered the melting point of ice, drawing heat from the cream and allowing it to freeze.


Early modern

In the 16th century, the
Mughal Empire The Mughal Empire was an Early modern period, early modern empire in South Asia. At its peak, the empire stretched from the outer fringes of the Indus River Basin in the west, northern Afghanistan in the northwest, and Kashmir in the north, to ...
used relays of horsemen to bring ice from the
Hindu Kush The Hindu Kush is an mountain range in Central Asia, Central and South Asia to the west of the Himalayas. It stretches from central and eastern Afghanistan into northwestern Pakistan and far southeastern Tajikistan. The range forms the wester ...
to its capital,
Delhi Delhi, officially the National Capital Territory (NCT) of Delhi, is a city and a union territory of India containing New Delhi, the capital of India. Straddling the Yamuna river, but spread chiefly to the west, or beyond its Bank (geography ...
, used to create kulfi, a popular frozen dairy dessert from the Indian subcontinent often described as traditional Indian ice cream.


Europe

The technique of freezing was not known from any European sources prior to the 16th century. During the 16th century, authors made reference to the refrigerant effect that happened when salt was added to ice. By the latter part of the 17th century sorbets and ice creams were made using this process. Ice cream's spread throughout Europe is sometimes attributed to Moorish traders, but more often
Marco Polo Marco Polo (; ; ; 8 January 1324) was a Republic of Venice, Venetian merchant, explorer and writer who travelled through Asia along the Silk Road between 1271 and 1295. His travels are recorded in ''The Travels of Marco Polo'' (also known a ...
. Though it is not mentioned in any of his writings, Polo is often credited with introducing sorbet-style desserts to Italy after learning of them during his travels to China. According to a legend, the Italian duchess
Catherine de' Medici Catherine de' Medici (, ; , ; 13 April 1519 – 5 January 1589) was an Italian Republic of Florence, Florentine noblewoman of the Medici family and Queen of France from 1547 to 1559 by marriage to Henry II of France, King Henry II. Sh ...
introduced flavoured sorbet ices to France when she brought Italian chefs with her to France upon marrying the Duke of Orléans (
Henry II of France Henry II (; 31 March 1519 – 10 July 1559) was List of French monarchs#House of Valois-Angoulême (1515–1589), King of France from 1547 until his death in 1559. The second son of Francis I of France, Francis I and Claude of France, Claude, Du ...
) in 1533. No Italian chefs were present in France during the Medici period, and ice cream already existed in France before de Medici was born. One hundred years later,
Charles I of England Charles I (19 November 1600 – 30 January 1649) was King of Kingdom of England, England, Kingdom of Scotland, Scotland, and Kingdom of Ireland, Ireland from 27 March 1625 until Execution of Charles I, his execution in 1649. Charles was born ...
was reportedly so impressed by the "frozen snow" that he offered his own ice cream maker a lifetime
pension A pension (; ) is a fund into which amounts are paid regularly during an individual's working career, and from which periodic payments are made to support the person's retirement from work. A pension may be either a " defined benefit plan", wh ...
in return for keeping the formula secret, so that ice cream could be a
royal prerogative The royal prerogative is a body of customary authority, Privilege (law), privilege, and immunity recognised in common law (and sometimes in Civil law (legal system), civil law jurisdictions possessing a monarchy) as belonging to the monarch, so ...
. There is no evidence to support these legends.


France

In 1665, the , edited in
Montpellier Montpellier (; ) is a city in southern France near the Mediterranean Sea. One of the largest urban centres in the region of Occitania (administrative region), Occitania, Montpellier is the prefecture of the Departments of France, department of ...
by Jean Fargeon, listed a type of frozen sorbet. While the composition of this sorbet is not provided, Fargeon specified that it was consumed frozen using a container that was plunged into a mixture of ice and saltpetre. These sorbets were transported in pots made of clay and sold for three livres per pound. According to , the practice of cooling drinks with ice and snow had already emerged in
Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
, particularly in the court, during the 16th century. The narrator notes that his hosts stored ice and snow, which they later added to their wine. This practice slowly progressed during the reign of
Louis XIII Louis XIII (; sometimes called the Just; 27 September 1601 – 14 May 1643) was King of France from 1610 until his death in 1643 and King of Navarre (as Louis II) from 1610 to 1620, when the crown of Navarre was merged with the French crown. ...
and was likely a necessary step towards the creation of ice cream. In 1682, provided a recipe for a specific type of ice cream, called . In 1686, Italian Francesco dei Coltelli opened an ice cream café in Paris, and the product became so popular that during the next 50 years, another 250 cafés opened in Paris. The first recipe in French for flavoured ices appears in 1674, in Nicholas Lemery's . Recipes for saw publication in the 1694 edition of Antonio Latini's (The Modern Steward). Recipes for flavoured ices begin to appear in François Massialot's , starting with the 1692 edition. Massialot's recipes result in a coarse, pebbly texture. Latini claims that the results of his recipes should have the fine consistency of sugar and snow.


England

The first recorded mention of ice cream in England was in 1671. Elias Ashmole described the dishes served at the Feast of St George at Windsor for Charles II in 1671 and included "one plate of ice cream". The only table at the banquet with ice cream on it was that of the King. The first recipe for ice cream in English was published in '' Mrs. Mary Eales's Receipts,'' in
London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...
in 1718: The 1751 edition of '' The Art of Cookery made Plain and Easy'' by Hannah Glasse includes a recipe for ice cream: "H. GLASSE Art of Cookery (ed. 4) 333 (heading) To make Ice Cream...set it he creaminto the larger Bason. Fill it with Ice, and a Handful of Salt."''
Oxford English Dictionary The ''Oxford English Dictionary'' (''OED'') is the principal historical dictionary of the English language, published by Oxford University Press (OUP), a University of Oxford publishing house. The dictionary, which published its first editio ...
'', 3nd ed. 201
''s.v.'' 'ice cream'
/ref> by M. Emy, in 1768, was a cookbook devoted to recipes for flavoured ices and ice cream. In 1769 Domenico Negri, an Italian confectioner, founded a business in
Berkeley Square Berkeley Square is a garden square in the West End of London. It is one of the best known of the many squares in London, located in Mayfair in the City of Westminster. It was laid out in the mid 18th century by the architect William Kent, ...
London which would become famous for its ice creams. His shop was at the Sign of the Pineapple (an emblem used by confectioners) and his trade card said he sold "All Sorts of English, French and Italian wet and dry'd Sweet Meats, Cedrati and Bergamot Chips, Naples Diavoloni, All sorts of Baskets & Cakes, fine and Common Sugar plums", but most importantly, "all Sorts of Ice, Fruits and creams in the best Italian manner." In 1789 Frederick Nutt, who served an apprenticeship at Negri's establishment, first published ''The Complete Confectioner''. The book had 31 recipes for ice creams, some with fresh fruit, others with jams, and some using fruit syrups. Flavours included ginger, chocolate, brown breadcrumbs and one flavoured with Parmesan cheese.


North America

An early North American reference to ice cream is from 1744: "Among the rarities ..was some fine ice cream, which, with the strawberries and milk, eat most deliciously." It was served by the lady of Governor Bland. Who brought ice cream to the United States first is unknown. Confectioners sold ice cream at their shops in New York and other cities during the colonial era.
Benjamin Franklin Benjamin Franklin (April 17, 1790) was an American polymath: a writer, scientist, inventor, statesman, diplomat, printer, publisher and Political philosophy, political philosopher.#britannica, Encyclopædia Britannica, Wood, 2021 Among the m ...
,
George Washington George Washington (, 1799) was a Founding Fathers of the United States, Founding Father and the first president of the United States, serving from 1789 to 1797. As commander of the Continental Army, Washington led Patriot (American Revoluti ...
, and
Thomas Jefferson Thomas Jefferson (, 1743July 4, 1826) was an American Founding Fathers of the United States, Founding Father and the third president of the United States from 1801 to 1809. He was the primary author of the United States Declaration of Indepe ...
were known to have regularly eaten and served ice cream. Records, kept by a merchant from Chatham street, New York, show George Washington spending approximately $200 on ice cream in the summer of 1790. The same records show president Thomas Jefferson having an 18-step recipe for ice cream. Although it is incorrect that Jefferson introduced ice cream to America, as is popularly believed, he did help to introduce vanilla ice cream. First Lady Dolley Madison, wife of U.S. President
James Madison James Madison (June 28, 1836) was an American statesman, diplomat, and Founding Fathers of the United States, Founding Father who served as the fourth president of the United States from 1809 to 1817. Madison was popularly acclaimed as the ...
, served ice cream at her husband's Inaugural Ball in 1813. Small-scale hand-cranked ice cream freezers were invented in England by Agnes Marshall and in America by
Nancy Johnson Nancy Elizabeth Johnson (née Lee; born January 5, 1935) is an American lobbyist and politics in the United States, politician from the U.S. state, state of Connecticut. Johnson was a United States Republican Party, Republican member of the Un ...
in the 1840s.


Expansion in popularity

In the Mediterranean, ice cream appears to have been accessible to ordinary people by the mid-18th century. Ice cream became popular and inexpensive in England in the mid-19th century, when Swiss émigré Carlo Gatti set up the first stand outside
Charing Cross Charing Cross ( ) is a junction in Westminster, London, England, where six routes meet. Since the early 19th century, Charing Cross has been the notional "centre of London" and became the point from which distances from London are measured. ...
station in 1851. He sold scoops in shells for one penny. Prior to this, ice cream was an expensive treat confined to those with access to an ice house. Gatti built an 'ice well' to store ice that he cut from Regent's Canal under a contract with the Regent's Canal Company. By 1860, he expanded the business and began importing ice on a large scale from Norway. In New Zealand, a newspaper advertisement for ice cream appeared in 1866, claiming to be the first time ice cream was available in
Wellington Wellington is the capital city of New Zealand. It is located at the south-western tip of the North Island, between Cook Strait and the Remutaka Range. Wellington is the third-largest city in New Zealand (second largest in the North Island ...
. Commercial manufacturing was underway in 1875. Ice cream rapidly gained in popularity in New Zealand throughout the 20th century. By 2018, exported ice cream products included new flavours such as matcha to cater to Asian markets. Agnes Marshall, regarded as the "queen of ices" in England, did much to popularize ice cream recipes and make its consumption into a fashionable middle-class pursuit. She wrote four books: ''The Book of Ices'' (1885), ''Mrs. A.B. Marshall's Book of Cookery'' (1888), ''Mrs. A.B. Marshall's Larger Cookery Book of Extra Recipes'' (1891) and ''Fancy Ices'' (1894) and gave public lectures on cooking. She even suggested using liquid nitrogen to make ice cream. Ice cream soda was invented in the 1870s, adding to ice cream's popularity. The invention of this cold treat is attributed to American Robert Green in 1874, although there is no conclusive evidence to prove his claim. The ice cream sundae originated in the late 19th century. Some sources say that the sundae was invented to circumvent
blue law Blue laws (also known as Sunday laws, Sunday trade laws, and Sunday closing laws) are laws restricting or banning certain activities on specified days, usually Sundays in the western world. The laws were adopted originally for Religion, religio ...
s, which forbade serving sodas on Sunday. Towns claiming to be the birthplace of the sundae include Buffalo, Two Rivers, Ithaca, and Evanston. Both the ice cream cone and banana split became popular in the early 20th century. The first mention of the cone being used as an edible receptacle for the ice cream is in ''Mrs. A.B. Marshall's Book of Cookery'' of 1888. Her recipe for "Cornet with Cream" said that "the cornets were made with almonds and baked in the oven, not pressed between irons". The ice cream cone was popularized in the US at the 1904 World's Fair in
St. Louis, Missouri St. Louis ( , sometimes referred to as St. Louis City, Saint Louis or STL) is an Independent city (United States), independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi River, Mississippi and the Miss ...
. The history of ice cream in the 20th century is one of great change and increases in availability and popularity. In the United States in the early 20th century, the ice cream soda was a popular treat at the soda shop, the soda fountain, and the ice cream parlour. During the American Prohibition, the soda fountain to some extent replaced the outlawed alcohol establishments such as bars and saloons. Ice cream became popular throughout the world in the second half of the 20th century after cheap refrigeration became common. There was an explosion of ice cream stores and of flavours and types. Vendors often competed on the basis of variety:
Howard Johnson's Howard Johnson by Wyndham, still commonly referred to as Howard Johnson's, is an American hotel brand with over 200 hotels in 15 countries. It was also formerly a Chain store, restaurant chain, which at one time was the largest in the U.S., wit ...
restaurants advertised "a world of 28 flavors", and
Baskin-Robbins Baskin-Robbins, Inc. is an American multinational chain of ice cream and cake specialty store, specialty shops owned by Inspire Brands. Baskin-Robbins was formed in 1945 by Burt Baskin and Irv Robbins in Glendale, California.spigot. In the United States, chains such as
Dairy Queen International Dairy Queen, Inc. (DQ) is an American multinational fast food chain founded in 1940 and currently headquartered in Bloomington, Minnesota. The first Dairy Queen was owned and operated by Sherb Noble and first opened on June 22, ...
, Carvel, and Tastee-Freez helped popularize soft-serve ice cream. Baskin-Robbins later incorporated it into their menu. Technological innovations such as these have introduced various food additives into ice cream, most notably the stabilizing agent
gluten Gluten is a structural protein naturally found in certain Cereal, cereal grains. The term ''gluten'' usually refers to the elastic network of a wheat grain's proteins, gliadin and glutenin primarily, that forms readily with the addition of water ...
, to which some people have an
intolerance Intolerance may refer to: * Hypersensitivity or intolerance, undesirable reactions produced by the immune system * ''Intolerance'' (film), a 1916 film by D. W. Griffith * ''Intolerance'' (album), the first solo album from Grant Hart, formerly ...
. Recent awareness of this issue has prompted a number of manufacturers to start producing gluten-free ice cream. The 1980s saw thicker ice creams being sold as "premium" and "super-premium" varieties under brands such as Ben & Jerry's, Chocolate Shoppe Ice Cream Company and Häagen-Dazs.


Composition

Ice cream is a colloidal
emulsion An emulsion is a mixture of two or more liquids that are normally Miscibility, immiscible (unmixable or unblendable) owing to liquid-liquid phase separation. Emulsions are part of a more general class of two-phase systems of matter called colloi ...
made with water, ice, milk fat, milk protein, sugar and air. Water and fat have the highest proportions by weight creating an emulsion that has dispersed phase as fat globules. The emulsion is turned into foam by incorporating air cells which are frozen to form dispersed ice cells. The triacylglycerols in fat are nonpolar and will adhere to themselves by Van der Waals interactions. Water is polar, thus emulsifiers are needed for dispersion of fat. Also, ice cream has a colloidal phase of foam which helps in its light texture. Milk proteins such as
casein Casein ( , from Latin ''caseus'' "cheese") is a family of related phosphoproteins (CSN1S1, αS1, aS2, CSN2, β, K-casein, κ) that are commonly found in mammalian milk, comprising about 80% of the proteins in cow's milk and between 20% and 60% of ...
and whey protein present in ice cream are amphiphilic, can adsorb water and form micelles which will contribute to its consistency. The proteins contribute to the emulsification, aeration and texture.
Sucrose Sucrose, a disaccharide, is a sugar composed of glucose and fructose subunits. It is produced naturally in plants and is the main constituent of white sugar. It has the molecular formula . For human consumption, sucrose is extracted and refined ...
, which is a
disaccharide A disaccharide (also called a double sugar or ''biose'') is the sugar formed when two monosaccharides are joined by glycosidic linkage. Like monosaccharides, disaccharides are simple sugars soluble in water. Three common examples are sucrose, ...
, is usually used as a sweetening agent.
Lactose Lactose is a disaccharide composed of galactose and glucose and has the molecular formula C12H22O11. Lactose makes up around 2–8% of milk (by mass). The name comes from (Genitive case, gen. ), the Latin word for milk, plus the suffix ''-o ...
, which is sugar present in milk, will cause freezing point depression. Thus, on freezing some water will remain unfrozen and will not give a hard texture. Too much lactose will result in a non-ideal texture because of either excessive freezing point depression or lactose crystallization.


Production

Before the development of modern refrigeration, ice cream was a luxury reserved for special occasions. Making it was quite laborious; ice was cut from lakes and ponds during the winter and stored in holes in the ground, or in wood-frame or brick ice houses, insulated by straw. Many farmers and plantation owners, including US Presidents George Washington and Thomas Jefferson, cut and stored ice in the winter for use in the summer. Frederic Tudor of Boston turned ice harvesting and shipping into a business, cutting ice in New England and shipping it around the world. Ice cream was made by hand in a large bowl placed inside a tub filled with ice and salt. This is called the pot-freezer method. French confectioners refined the pot-freezer method, making ice cream in a (a covered pail with a handle attached to the lid). In the pot-freezer method, the temperature of the ingredients is reduced by the mixture of crushed ice and salt. The salt water is cooled by the ice, and the action of the salt on the ice causes it to (partially) melt, absorbing
latent heat Latent heat (also known as latent energy or heat of transformation) is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process—usually a first-order phase transition, like melting or condensation. ...
and bringing the mixture below the freezing point of pure water. The hand-cranked churn, which also uses ice and salt for cooling, replaced the pot-freezer method. The exact origin of the hand-cranked freezer is unknown, but the first US patent for one was #3254 issued to Nancy Johnson on 9 September 1843. The hand-cranked churn produced smoother ice cream than the pot freezer and did it quicker. Many inventors patented improvements on Johnson's design. In Europe and America, ice cream was made and sold by small businesses, mostly confectioners and caterers. Jacob Fussell of Baltimore, Maryland was the first to manufacture ice cream on a large scale. Fussell bought fresh dairy products from farmers in York County, Pennsylvania, and sold them in Baltimore. An unstable demand for his dairy products often left him with a surplus of cream, which he made into ice cream. He built his first ice cream factory in Seven Valleys, Pennsylvania, in 1851. Two years later, he moved his factory to Baltimore. Later, he opened factories in several other cities and taught the business to others, who operated their own plants. Mass production reduced the cost of ice cream and added to its popularity. The development of industrial refrigeration by German engineer
Carl von Linde Carl Paul Gottfried von Linde (11 June 1842 – 16 November 1934) was a German scientist, engineer, and businessman. He discovered the refrigeration cycle and invented the first industrial-scale air separation and gas liquefaction processes, ...
during the 1870s eliminated the need to cut and store natural ice, and, when the freezer was perfected in 1926, commercial mass production of ice cream and the birth of the modern ice cream industry was underway. In modern times, a common method for producing ice cream at home is to use an ice cream maker, an electrical device that churns the ice cream mixture while cooled inside a household freezer. Some more expensive models have an built-in freezing element. A newer method is to add
liquid nitrogen Liquid nitrogen (LN2) is nitrogen in a liquid state at cryogenics, low temperature. Liquid nitrogen has a boiling point of about . It is produced industrially by fractional distillation of liquid air. It is a colorless, mobile liquid whose vis ...
to the mixture while stirring it using a spoon or spatula for a few seconds; a similar technique, advocated by Heston Blumenthal as ideal for home cooks, is to add
dry ice Dry ice is the solid form of carbon dioxide. It is commonly used for temporary refrigeration as CO2 does not have a liquid state at normal atmospheric pressure and Sublimation (phase transition), sublimes directly from the solid state to the gas ...
to the mixture while stirring for a few minutes. An unusual method of making ice cream was done during World War II by American fighter pilots based in the South Pacific. They attached pairs of cans to their aircraft. The cans were fitted with a small propeller, this was spun by the slipstream and drove a stirrer, which agitated the mixture while the intense cold of high altitude froze it. B-17 crews in Europe did something similar on their bombing runs as did others.


Retail sales

Ice cream can be mass-produced and thus is widely available in developed parts of the world. Ice cream can be purchased in large
carton A carton is a box or container usually made of liquid packaging board, paperboard and sometimes of corrugated fiberboard. Many types of cartons are used in packaging. Sometimes a carton is also called a box. Types of cartons Folding cartons ...
s (vats and squrounds) from supermarkets and grocery stores, in smaller quantities from ice cream shops,
convenience store A convenience store, convenience shop, bakkal, bodega, corner store, corner shop, superette or mini-mart is a small retail store that stocks a range of everyday items such as convenience food, groceries, beverages, tobacco products, lotter ...
s, and milk bars, and in individual servings from small carts or vans at public events. In 2015, the US produced nearly of ice cream.


Specialty job

Today, jobs specialize in the selling of ice cream. The title of a person who works in this speciality is often called an 'ice cream man', however women also specialize in the selling of ice cream. People in this line of work often sell ice cream on beaches. On beaches, ice cream is either sold by a person who carries a box full of ice cream and is called over by people who want to purchase ice cream, or by a person who drives up to the top of the beach and rings a bell. In the second method, people go up to the top of the beach and purchase ice cream straight from the ice cream seller, who is often in an ice cream van. In Turkey and Australia, ice cream is sometimes sold to beach-goers from small powerboats equipped with chest freezers. Some ice cream distributors sell ice cream products from travelling refrigerated vans or carts (commonly referred to in the US as "ice cream trucks"), sometimes equipped with speakers playing children's music or folk melodies (such as " Turkey in the Straw"). The driver of an ice cream van drives throughout neighbourhoods and stops every so often, usually every block. The seller on the ice cream van sells the ice cream through a large window; this window is also where the customer asks for ice cream and pays. Ice cream vans in the United Kingdom make a
music box A music box (American English) or musical box (British English) is an automatic musical instrument in a box that produces Musical note, musical notes by using a set of pins placed on a revolving cylinder (geometry), cylinder or disc to pluck ...
noise rather than actual music.


Ingredients and definitions

Many countries have regulations controlling what can be described as ice cream. In the United Kingdom, Food Labelling Regulations (1996) set a requirement of at least 5% milk fat and 2.5% milk protein in order to be sold as ice cream within the UK. In rest of the European Union, a trade organization called European Ice Cream Association calls for minimum dairy fat content of 5%. In 2015, these regulations were relaxed so that containing milk fat or protein was no longer necessary in the UK for a product to be sold as "ice cream", though at least 5% milk fat is still required for a product to be labeled "dairy ice cream". After this change, many UK products labelled as "ice cream" substitute milk fat with cheaper alternatives like palm oil,
coconut oil Coconut oil (or coconut fat) is an edible oil derived from the kernels, meat, and milk of the coconut palm fruit. Coconut oil is a white solid fat below around , and a clear thin liquid oil at higher temperatures. Unrefined varieties have a disti ...
, and vegetable fats. In the US, the FDA rules state that to be described as "ice cream", a product must have the following composition: * greater than 10% milk fat * 6 to 10% milk and non-fat milk solids: this component, also known as the milk solids-not-fat or serum solids, contains the
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 ...
s (
casein Casein ( , from Latin ''caseus'' "cheese") is a family of related phosphoproteins (CSN1S1, αS1, aS2, CSN2, β, K-casein, κ) that are commonly found in mammalian milk, comprising about 80% of the proteins in cow's milk and between 20% and 60% of ...
s and whey proteins) and
carbohydrate 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'' ...
s (lactose) found in milk It generally also has: * 12 to 16% sweeteners: usually a combination of sucrose and glucose-based
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 ...
sweeteners * 0.2 to 0.5% stabilizers and emulsifiers * 55 to 64% water, which comes from the milk or other ingredients These compositions are percentage by weight. Since ice cream can contain as much as half air by volume, these numbers may be reduced by as much as half if cited by volume. In terms of dietary considerations, the percentages by weight are more relevant. Even low-fat products have high caloric content: Ben and Jerry's No-Fat Vanilla Fudge, for instance, contains per half-cup due to its high sugar content. According to the Canadian Food and Drugs Act and Regulations, ice cream in Canada is divided into "ice cream mix" and "ice cream". Each has a different set of regulations. * "Ice cream" must be at least 10 percent milk fat, and must contain at least of solids per litre. When cocoa, chocolate syrup, fruit, nuts, or confections are added, the percentage of milk fat can be 8 percent. * "Ice cream mix" is defined as the pasteurized mix of cream, milk and other milk products that are not yet frozen. It may contain eggs, artificial or non-artificial flavours, cocoa or chocolate syrup, a food colour, an agent that adjusts the pH level in the mix, salt, a stabilizing agent that does not exceed 0.5% of the ice cream mix, a sequestering agent which preserves the food colour, edible casein that does not exceed 1% of the mix,
propylene glycol Propylene glycol ( IUPAC name: propane-1,2-diol) is a viscous, colorless liquid. It is almost odorless and has a faintly sweet taste. Its chemical formula is CH3CH(OH)CH2OH. As it contains two alcohol groups, it is classified as a diol. An al ...
mono fatty acids in an amount that will not exceed 0.35% of the ice cream mix, and sorbitan tristearate in an amount that will not exceed 0.035% of the mix. Ice cream mix may not include less than 36% solid components.


Physical properties

Ice cream is considered a colloidal system. It is composed by ice cream crystals and aggregates, air that does not mix with the ice cream by forming small bubbles in the bulk and partially coalesced fat globules. This dispersed phase made from all the small particles is surrounded by an unfrozen continuous phase composed by sugars, proteins, salts, polysaccharides and water. Their interactions determine the properties of ice cream, whether soft and whippy or hard.


Ostwald ripening

Ostwald ripening Ostwald ripening is a phenomenon observed in solid solutions and liquid sols that involves the change of an inhomogeneous structure over time, in that small crystals or sol particles first dissolve and then redeposit onto larger crystals or s ...
is the explanation for the growth of large crystals at the expense of small ones in the dispersion phase. This process is also called migratory recrystallization. It involves the formation of sharp crystals. Theories about Ostwald recrystallization admit that after a period of time, the recrystallization process can be described by the following equation: r = r (0) + Rt \exp(1/n) Where r (0) is the initial size, n the order of recrystallization, and t a time constant for recrystallization that depends on the rate R (in units of size/time). To make ice cream smooth, recrystallization must occur as slowly as possible, because small crystals create smoothness, meaning that r must decrease.


Food safety concerns

From the perspective of food chemistry, ice cream is a colloid or foam. The dietary emulsifier plays an important role in ice cream. Soy lecithin and polysorbate are two popular emulsifiers used for ice cream production. A mouse study in 2015 shows that two commonly used dietary emulsifiers carboxymethyl cellulose (CMC) and
polysorbate 80 Polysorbate 80 is a nonionic surfactant and emulsifier often used in pharmaceuticals, foods, and cosmetics. This synthetic compound is a viscous, water-soluble yellow liquid. Chemistry Polysorbate 80 is derived from polyethoxylated sorbitan ...
(P80) can potentially cause inflammatory bowel diseases, weight gain, and other metabolic syndromes.


Around the world

Around the world, different cultures have developed unique versions of ice cream, suiting the product to local tastes and preferences.


Overview

Italian ice cream, or
gelato Gelato (; ; ) refers to a specific type of ice cream of Italian origin. In Italian, ''Gelato'' is the common word for all types of ice cream. Artisanal gelato in Italy generally contains 6–9% butterfat, which is lower than other styles of ...
as it is known, is a traditional and popular dessert in Italy. Much of the production is still hand-made and flavoured by each individual shop in ''gelaterie a produzione propria''. Gelato is made from whole milk, sugar, sometimes eggs, and natural flavourings. It typically contains 7–8% fat, less than ice cream's minimum of 10%. Per capita, Australians and New Zealanders are among the leading ice cream consumers in the world, eating and each per year respectively, behind the United States where people eat each per year. ''Golas'' are summer treat consisting of shaved ice packed into a popsicle form on a stick and soaked in flavoured sugar syrup, a popular choice being ''kala khatta'', made from the sweet and sour jamun fruit. In Spain, ice cream is often in the style of Italian gelato. Spanish can be found in many cafés or speciality ice cream stores. While many traditional flavours are sold, cafés may also sell flavours like nata,
viola The viola ( , () ) is a string instrument of the violin family, and is usually bowed when played. Violas are slightly larger than violins, and have a lower and deeper sound. Since the 18th century, it has been the middle or alto voice of the ...
, crema catalana, or tiramisu. In the 1980s, the Spanish industry was known for creating many creative and weird ice cream bars. In the United Kingdom, 14million adults buy ice cream as a treat, in a market worth £1.8billion (according to a report produced in 2024). In the United States, ice cream made with just cream, sugar, and a flavouring (usually fruit) is sometimes referred to as "Philadelphia style" ice cream. Ice cream that uses eggs to make a
custard Custard is a variety of culinary preparations based on sweetened milk, cheese, or cream cooked with Eggs as food, egg or egg yolk to thicken it, and sometimes also flour, corn starch, or gelatin. Depending on the recipe, custard may vary in con ...
is sometimes called "French ice cream". American federal labelling standards require ice cream to contain a minimum of 10% milk fat. Americans consume about 23 litres of ice cream per person per year—the most in the world. According to the NPD Group, the most popular ice cream flavours in the U.S. are vanilla and chocolate with a combined market share of 40% as of 2008.


Cones

''Mrs A. B. Marshall's Cookery Book'', published in 1888, endorsed serving ice cream in cones. Agnes Marshall was a celebrated cookery writer of her day and helped to popularize ice cream. She patented and manufactured an ice cream maker and was the first to suggest using liquefied gases to freeze ice cream after seeing a demonstration at the Royal Institution. Reliable evidence proves that ice cream cones were served in the 19th century, and their popularity increased greatly during the St. Louis World's Fair in 1904. According to legend, an ice cream vendor at the fair ran out of cardboard dishes. The vendor at the
Syria Syria, officially the Syrian Arab Republic, is a country in West Asia located in the Eastern Mediterranean and the Levant. It borders the Mediterranean Sea to the west, Turkey to Syria–Turkey border, the north, Iraq to Iraq–Syria border, t ...
n waffle booth next door, unsuccessful in the intense heat, offered to make cones by rolling up his waffles. The new product sold well and was widely copied by other vendors.


Cryogenics

In 2006, some commercial ice cream makers began to use
liquid nitrogen Liquid nitrogen (LN2) is nitrogen in a liquid state at cryogenics, low temperature. Liquid nitrogen has a boiling point of about . It is produced industrially by fractional distillation of liquid air. It is a colorless, mobile liquid whose vis ...
in the primary freezing of ice cream, thus eliminating the need for a conventional ice cream freezer. The preparation results in a column of white condensed
water vapour Water vapor, water vapour, or aqueous vapor is the gaseous phase of water. It is one state of water within the hydrosphere. Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice. Water vapor ...
cloud. The ice cream, dangerous to eat while still "steaming" with liquid nitrogen, is allowed to rest until the liquid nitrogen is completely vaporized. Sometimes ice cream is frozen to the sides of the container, and must be allowed to thaw. Good results can also be achieved with the more readily available
dry ice Dry ice is the solid form of carbon dioxide. It is commonly used for temporary refrigeration as CO2 does not have a liquid state at normal atmospheric pressure and Sublimation (phase transition), sublimes directly from the solid state to the gas ...
, and authors such as Heston Blumenthal have published recipes to produce ice cream and sorbet using a simple blender.Heston At Home- Heston Blumenthal


See also

* Ice cream social * List of dairy products *
List of desserts A dessert is typically the sweet Course (food), course that, after the entrée and main course, concludes a meal in the culture of many countries, particularly western world, Western culture. The course usually consists of sweet foods, but may ...
*
List of ice cream brands This is a list of notable ice cream brands. Ice cream is a frozen dessert, usually made from dairy products such as milk and cream, and often combined with fruits or other ingredients and flavors. However, not all frozen desserts can be called ice ...
* List of ice cream flavors * List of ice cream parlor chains *
Gelato Gelato (; ; ) refers to a specific type of ice cream of Italian origin. In Italian, ''Gelato'' is the common word for all types of ice cream. Artisanal gelato in Italy generally contains 6–9% butterfat, which is lower than other styles of ...


Notes


References


External links


How It's Made: UConn Dairy Bar Ice Cream


{{Authority control Frozen desserts Types of food World cuisine