chopped liver

noun2

1. •
   A Jewish pâté-like food, usually spread on bread, made by mincing beef or chicken liver and onions which have been broiled or fried in schmaltz (“chicken fat”) together with hard-boiled eggs.
2. •
   (informal, humorous) A person or object not worthy of being noticed; someone or something insignificant.

   • You've been nice enough, but what am I, chopped liver or something? — 1949