chicory, (Cichorium intybus), blue-flowered perennial plant of the family Asteraceae. Native to Europe and introduced into the United States late in the 19th century, chicory is cultivated extensively in the Netherlands, Belgium, France, and Germany and to some extent in North America. Its leaves are eaten as a vegetable or in a salad, and the roots may be boiled and eaten with butter. The plant is grown as a fodder or herbage crop for cattle. Chicory root can be roasted and ground to impart additional colour, body, and bitterness to coffee; in the United States this practice is especially popular in the city of New Orleans.

Chicory has a long fleshy taproot and a rigid, branching, hairy stem that grows to a height of about 1 to 1.5 metres (3 to 5 feet). Its lobed toothed leaves, in wild chicory similar in appearance to dandelion leaves, are borne around the base. The roots of some varieties are grown in the open during the summer and are taken up in the fall to be forced, or grown indoors out of season, during the winter. One method of forcing produces barbe de capucin, the loose blanched leaves much esteemed by the French as a winter salad. Another method produces witloef, or witloof, the tighter heads or crowns preferred in Belgium and elsewhere. Throughout Europe the roots are stored to produce leaves for salads during winter.

In temperate regions having a growing season of five and a half to six months, if the seed is sown too early in the spring, the plants may go to seed instead of forming large storage roots suitable for forcing; in such areas seed should be sown in June. The roots may be forced in cellars, under greenhouse benches, or outdoors.

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The Editors of Encyclopaedia Britannica This article was most recently revised and updated by Melissa Petruzzello.
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coffee, beverage brewed from the roasted and ground seeds of the tropical evergreen coffee plants of African origin. Coffee is one of the three most popular beverages in the world (alongside water and tea) and one of the most profitable international commodities. Though coffee is the basis for an endless array of beverages, including espresso, cappuccinos, mochas, and lattes, its popularity is mainly attributed to its invigorating effect, which is produced by caffeine, an alkaloid present in coffee.

Two species of coffee plants, Coffea arabica and C. canephora, supply almost all of the world’s consumption. Arabica is considered a milder and more flavourful and aromatic brew than Robusta, the main variety of C. canephora. The flatter and more elongated Arabica bean is more widespread than Robusta but more delicate and vulnerable to pests, requiring a cool subtropical climate; Arabica must grow at higher elevations (2,000–6,500 feet [600–2,000 metres]), it needs a lot of moisture, and it has fairly specific shade requirements. Latin America, eastern Africa, Asia, and Arabia are leading producers of Arabica coffee. The rounder, more convex Robusta bean, as its name suggests, is hardier and can grow at lower altitudes (from sea level to 2,000 feet). Robusta coffee is cheaper to produce, has twice the caffeine content of Arabica, and is typically the bean of choice for inexpensive commercial coffee brands. Western and Central Africa, Southeast Asia, and Brazil are major producers of Robusta coffee.

History

Wild coffee plants, probably from Kefa (Kaffa), Ethiopia, were taken to southern Arabia and placed under cultivation in the 15th century. One of many legends about the discovery of coffee is that of Kaldi, an Arab goatherd who was puzzled by the strange antics of his flock. About 850 ce Kaldi supposedly sampled the berries of the evergreen bush on which the goats were feeding and, on experiencing a sense of exhilaration, proclaimed his discovery to the world.

Fruit. Grape. Vitis vinifera. Blauer Portugieser. Wine. Wine grape. Autumn. Grape leaves. Two clusters of Blauer Portugieser grapes on the vine.
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Whatever the actual origin of coffee, its stimulating effect undoubtedly made it popular. Ironically, though Islamic authorities pronounced the drink intoxicating and therefore prohibited by the Qurʾān, many Muslims were attracted to the beverage as a substitute for alcohol, also prohibited by the Qurʾān. Despite the threat of severe penalties, coffee drinking spread rapidly among Arabs and their neighbours and even gave rise to a new social and cultural entity, the coffeehouse.

Coffee was introduced into one European country after another throughout the 16th and 17th centuries. Many accounts are recorded of its prohibition or approval as a religious, political, and medical potion. By the end of the 17th century, coffeehouses were flourishing across Britain, the British colonies in America, and continental Europe.

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Until the close of the 17th century, the world’s limited supply of coffee was obtained almost entirely from the province of Yemen in southern Arabia. But, with the increasing popularity of the beverage, propagation of the plant spread rapidly to Java and other islands of the Indonesian archipelago in the 17th century and to the Americas in the 18th century. Coffee cultivation was started in the Hawaiian Islands in 1825.

By the 20th century the greatest concentration of production was centred in the Western Hemisphere—particularly Brazil. In the late 19th and early 20th centuries, industrial roasting and grinding machines came into use, vacuum-sealed containers were invented for ground roasts, and decaffeination methods for green coffee beans were developed. After 1950 the production of instant coffee was perfected, which led to increased production of the cheaper Robusta beans in Africa. See also history of coffee.