A food handler is prepping a seafood dish on April 4, using shrimp and ... This is because one of the major ingredients of the seafood dish, which is shrimp has a use-by date of April 8. Thus, using or consuming the seafood dish after April 8 would be considered unsafe. A use-by date is otherwise known as the expiration date. It is a date food or substance that is considered to be unsafe or risky to use.