A bittering agent is a

flavoring agent A flavoring (or flavouring), also known as flavor (or flavour) or flavorant, is a food additive used to improve the taste or Sense of smell, smell of food. It changes the perceptual impression of food as determined primarily by the chemoreceptor ...

added to a food or beverage to impart a bitter taste, possibly in addition to other effects. While many substances are bitter to a greater or lesser degree, a few substances are used specifically for their bitterness, especially to balance other flavors, such as sweetness. Notable beverage examples include

caffeine Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used recreationally as a cognitive enhancer, increasing alertness and attentional performance. Caffeine acts by blocking binding of adenosine t ...

, found naturally in tea and

coffee Coffee is a drink prepared from roasted coffee beans. Darkly colored, bitter, and slightly acidic, coffee has a stimulating effect on humans, primarily due to its caffeine content. It is the most popular hot drink in the world. Seeds of ...

and added to many

soft drinks A soft drink (see § Terminology for other names) is a drink that usually contains water (often carbonated), a sweetener, and a natural and/or artificial flavoring. The sweetener may be a sugar, high-fructose corn syrup, fruit juice, a ...

hops Hops are the flowers (also called seed cones or strobiles) of the hop plant '' Humulus lupulus'', a member of the Cannabaceae family of flowering plants. They are used primarily as a bittering, flavouring, and stability agent in beer, to wh ...

beer Beer is one of the oldest and the most widely consumed type of alcoholic drink in the world, and the third most popular drink overall after water and tea. It is produced by the brewing and fermentation of starches, mainly derived from cer ...

, and

quinine Quinine is a medication used to treat malaria and babesiosis. This includes the treatment of malaria due to '' Plasmodium falciparum'' that is resistant to chloroquine when artesunate is not available. While sometimes used for nocturnal leg ...

tonic water Tonic water (or Indian tonic water) is a carbonated soft drink in which quinine is dissolved. Originally used as a prophylactic against malaria, tonic water usually has a significantly lower quinine content and is consumed for its distinctive ...

. Food examples include

bitter melon ''Momordica charantia'' (commonly called bitter melon; Goya; bitter apple; bitter gourd; bitter squash; balsam-pear; with many more names listed below) is a tropical and subtropical vine of the family Cucurbitaceae, widely grown in Asia, Afr ...

, which may be mixed into a

stir fry Stir frying () is a cooking technique in which ingredients are fried in a small amount of very hot oil while being stirred or tossed in a wok. The technique originated in China and in recent centuries has spread into other parts of Asia and t ...

or soup for its bitter flavor. Potent bittering agents may also be added to dangerous products as aversive agents to make them foul tasting, so as to prevent accidental poisoning. Examples including anti-freeze, household cleaning products and pesticides such as slug pellets. In general dangerous products with bright colours, which may be appealing to children, often contain agents such as denatonium. However, the efficacy of using bittering agents for this purpose is not conclusive.

Beer

Prior to the introduction of hops, many other bitter herbs and flowers were used as bittering agents in beer, in a mixture called

gruit Gruit (alternately grut or gruyt) is a herb mixture used for bittering and flavouring beer, popular before the extensive use of hops. The terms gruit and grut ale may also refer to the beverage produced using gruit. Historically, gruit is the te ...

, which could include

dandelion ''Taraxacum'' () is a large genus of flowering plants in the family Asteraceae, which consists of species commonly known as dandelions. The scientific and hobby study of the genus is known as taraxacology. The genus is native to Eurasia and Nor ...

, burdock root,

marigold Marigold may refer to: * Marigold (color), a yellow-orange color It may also refer to: Plants * In the genus ''Calendula'': ** Common marigold, '' Calendula officinalis'' (also called pot marigold, ruddles, or Scotch marigold) * In the genus ' ...

, horehound (the German name for horehound means "mountain hops"),

ground ivy ''Glechoma hederacea'' is an aromatic, perennial, evergreen creeper of the mint family Lamiaceae. It is commonly known as ground-ivy, gill-over-the-ground, creeping charlie, alehoof, tunhoof, catsfoot, field balm, and run-away-robin. It is als ...

, and heather. Also

bog myrtle ''Myrica gale'' is a species of flowering plant in the family Myricaceae, native to parts of Japan, North Korea, Russia, mainland Europe, the British Isles and parts of northern North America, in Canada and the United States. Common names includ ...

. More recently, some Chinese and Okinawan beer uses

as a bittering agent.For example
Goya Dry
b
Helios
brewery of Okinawa

Other substances

Various other substances are used, including: * Aloin * Gesho, used in Tej, Ethiopian honey wine

Other uses

Other prominent uses of bittering agents include: *

Bitters Bitters (plural also ''bitters'') is traditionally an alcoholic preparation flavored with botanical matter for a bitter or bittersweet flavor. Originally, numerous longstanding brands of bitters were developed as patent medicines, but now a ...

– used as digestifs or flavorings * Dandelion and burdock – traditional British soft drink

References

{{reflist Food additives