Key Message: The date on the label makes it clear how long the food can be kept before it starts to spoil or can no longer be eaten. The "Use By" date is about food safety, and the "Best before" date is about food quality, not safety.

'Use By'

use by

'Best Before'

best before

After the food package is opened

After purchasing food, the principle of first-in, first-out should be followed. Once the packaging of the food is opened, the date mark may become irrelevant. Follow the manufacturer's instructions for storage time and conditions after opening, e.g. 'refrigerate after opening at or below 4oC and finish within 7 days'