In addition to the usual way of writing (production date - expiration date), many product labels also have the terms "use by..." and "best before...".

The term “use by…” is food safety information, meaning that the food can be used and is safe until the date stated, not after that date. This phrase is often used for foods that have a short safety period and are easily spoiled after the expiration date, for example: meat products or ready-to-eat salads.

On the other hand, the term “best before…” refers to the product’s best quality, not its safety. The food may still be safe to eat after this date, but it may not be at its best. Its flavor and texture may not be as good as before. This phrase is often used for frozen, dried, and canned foods. However, consumers should avoid eating spoiled food and should use it within the expiration date printed on the food packaging.

The Food Safety Department also notes the use of food after the package has been opened. Accordingly, after purchasing food, the manufacturer's instructions for use must be followed; including the manufacturer's instructions on the time and conditions for storing food after opening the package, for example: "store in the refrigerator after opening at a temperature equal to or lower than 4 degrees Celsius and use up within 7 days".