The phrase "duck liver" refers to the liver of a duck, which is a type of bird. It is often used to describe a specific delicacy called foie gras, which is made from the liver of ducks or geese. Full definition
This recipe is infused with freeze - dried duck liver to give dogs more of the flavor that they love. (ipupster.com)
3 - is it ok to eat duck liver instead of chicken? (westonaprice.org)
The People's Choice winner was Coli Carroll with his Duckworth cocktail: Knob Creek single barrel bourbon, charred cherry wood Infused Carpano Antica, balsamic & vermouth spiced cherry, with duck liver mousse and flake salt. (nickyusa.com)