Shelf Life and Expiry Date:
The two terms are very different as the term “Shelf Life” refers to the quality of food, and the “Expiry Date” refers to food safety.
A product that has exceeded its shelf life may remain safe but lose its quality. In most food stores, shelf life is increased by the stock rotation system, Which requires the transfer of products with the earliest date to display the product for sale (Sell By Date) to the front of the shelf, which means that most shoppers will pick it up first and that means taking it out of the store.
The importance of this procedure is that some shops may be fined for selling expired products and most, if not all, will have to register such products as wasted products, resulting in loss of profits.