Have you ever noticed the numbers on the bottom of a milk package? Do you know what’s their meaning?
Every milk package has numbers from 1 to 5, or in some countries from 1 to 6. They shows how many times the milk has been reprocessed or recycled.
The reprocessing or recycling of the milk is allowed in some countries and there is a legal regulation about that. The milk can be reprocessed up to 5 times at 190 °C and returned again to the stores. All milk manufactures are required to show how many times they repeated the process.
You can find the number which is missing in the row on the bottom of the package. For example if you read “12356”, it means that the milk’s expiration date is extended 4 times or it has been 4 times re-pasteurized.
In some cases you can notice only one number at the bottom of the package, which indicates the same thing.
If you prefer to buy a whole box of milks, you need to be aware that they might be mixed.