A rich, French candy made with melted chocolate, butter, cream and sometimes eggs and often flavored with liquor. The candy mixture is cooled, then dropped from a spoon or shaped into balls and rolled in cocoa powder or chopped nuts, or dipped in chocolate. A truffle also is an edible fungus that grows underground near oak trees and is valued for its aroma and delicate flavor. A truffle is round, with a wrinkled surface, and is anywhere from the size of a walnut to that of an orange. Because truffles cannot be cultivated, they are extremely rare and expensive. Two highly prized varieties are the dark brown or black truffle of France and the white truffle of Italy. Truffles are sold fresh and canned in some gourmet specialty stores.