Foie gras (play /fwɑːˈɡrɑː/; French: [fwa ɡʁɑ]); French for "fat liver") is a food product made of the liver of a duck or goose that has been specially fattened. Foie gras is defined as the liver of a duck fattened by gavage (force-feeding corn), although outside of France it is occasionally produced using natural feeding.