"Sell By" is a date printed on food packaging that indicates the last day a retailer should sell the product to ensure its best quality. It helps stores manage inventory and encourages consumers to buy items while they are still fresh. This date does not mean the product is unsafe to eat after that day; rather, it suggests that the item may start to lose its quality. Consumers should check for signs of spoilage, such as changes in smell or appearance, before consuming products past their Sell By date.