You should also look for any greenish parts on the liver, as these will cause the liver to taste bitter. [7] X Research source
Don’t use livers in giblet gravy - it can give the gravy a bitter taste.
Livers from the grocery store or butcher may come in a jar, or they might be fresh. Ask your butcher how they package them.
Use the livers within three to four months of freezing them.
