Is mayonaisse still good after its best before date?

Mayonnaise can still be safe to eat after its best before date, as this date primarily indicates quality rather than safety. If the mayonnaise has been stored properly, remains sealed, and shows no signs of spoilage (such as off-smells, discoloration, or separation), it may still be usable. However, once opened, it's best to use it within a few months for optimal quality. Always use your senses to check for any signs of spoilage before consuming.