What is liver of a goose or duck called when made into a food?

Answer 1

Thanks for the query.

Foie gras is a type of food made from the liver of a duck or a goose which has been specially flattened. The liver is flattened by force feeding the duck or goose corn from a feeding tube.

Source - https://en.wikipedia.org/wiki/Foie_gras

Answer 2

Foie gras. Foie gras is a luxury food productmade of the liver of a duck or goose that has been specially fattened. By French law, foie gras is defined as the liver of a duck or goose fattened by force-feeding corn with a feeding tube, a process also known as gavage.