Duck liver contains only trace amounts of FODMAPs.
It's the perfect choice for a low FODMAP diet. Consume in any amount. Just be sure to check the ingredients, so there's no onion or garlic inside.
Duck liver mousse is a form of pâté. Pâté is a paste, pie or loaf consisting of a forcemeat that at least contains liver.
Common additions include ground meat from pork, poultry, fish or beef, fat, vegetables, herbs, spices and either wine or brandy (often cognac or armagnac). Pâté can be served either hot or cold, but it is considered to develop its best flavors after a few days of chilling.