knife is used for cutting, chopping, dicing, slicing, mincing, peeling, separating, and other kitchen tasks where the thin metal shaft of a blade is of value for food preparation. Special purpose knives such as boning, carving, mincing, slicing, deveining, and paring knives are available as well specific food knives for butter, cheese, chestnuts, clams, filets, grapefruit, oysters, tomatoes, and steak.