The food's shelf-life dates. These may include The date product was manufactured, processed, or packaged. This is the last day the product can be sold. It allows time for the product to be stored and used at home. The lot number of the package.
Manufacturers place batch identification numbers on food packages.
If there is a problem with a batch of food, news reports will advise people to return products with a certain number. These will reveal whether the container's original closing has been broken. It could be a plastic seal around the outside of a container or a safety button on the lid of a jar. If the seal is broken or the button is up, don't buy and don't use the product. The name and address of the manufacturer or packer of the food.