Foie gras
In 2016, it was reported that France produces an estimated 75% of the world's foie gras and southwestern France produces approximately 70% of that total. In 2016, it can retail for upwards of $65 a pound.
Mulard
Traditionally, foie gras was primarily produced with geese, but in the 1960s the majority of farmers began to use mulards. Geese are more expensive to maintain than ducks (they are larger and more aggressive), and the more temperamental muscovies did not accept the process of gavage (force feeding) as readily as Pekins, causing the quality of the foie gras to suffer. This problem was avoided by the introduction of mulards. These hybrids have also become extremely common in countries where foie gras is not produced.