Can you use pesto sauce after expiration date?

Using pesto sauce after its expiration date is generally not recommended, as it may pose a risk of spoilage or foodborne illness. If the pesto has been stored properly and shows no signs of spoilage—such as an off smell, discoloration, or mold—it might still be safe to consume shortly after the expiration date. However, always trust your senses and err on the side of caution. When in doubt, it's best to discard it.