Expiry date: Expiration dates tell consumers the last day a product is safe to consume. A product should never be consumed after the expiry date.
Best before date: After that, the product can still be safe to eat, but a “best-before” date does not guarantee product safety. … After the expiry date, the food may not have the same nutrient content declared on the label. Food should not be eaten if the expiration date has passed. They should be discarded.
Source: Nida Abrar