Foie gras ( , French for `` fat liver '' ) is a luxury food product made of the liver of a duck or goose that has been specially fattened .
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 .