The globe artichoke, also known as French artichoke and green artichoke in the USA, is a variety of a species of thistle cultivated as a food. The edible portion of the plant consists of the flower buds before the flowers come into bloom. The budding artichoke flower-head is a cluster of many budding small flowers (an inflorescence), together with many bracts, on an edible base.
Artichokes are frequently prepared by removing all but 1/2" or so of the stem. To remove thorns, which may interfere with eating, around a quarter of each scale can be cut off. To cook, the artichoke is boiled or steamed. A cooked, unseasoned artichoke has a delicate flavour.
Salt may be added to the water if boiling artichokes. Covered artichokes, in particular those that have been cut, can turn brown due to the enzymatic browning and chlorophyll oxidation. Placing them in water slightly acidified with vinegar or lemon juice can prevent the discoloration.
Leaves are often removed one at a time, and the fleshy base eaten, with vinaigrette, hollandaise, vinegar, butter, mayonnaise, aioli, lemon juice, or other sauces. The fibrous upper part of each leaf is usually discarded. The heart is eaten when the inedible choke has been peeled away from the base and discarded. The thin leaves covering the choke are also edible.