The guy at the milk case in the supermarket. You know the guy. He and his cart are there checking the expiration date of

[haele]

21. Depends on the brand and type.

Whole milk goes bad once opened faster than 1% or non-fat, typically within a week, no matter what the "2 week good for use" date says. So if the use by date is within 5 or 6 days since you bought it, it might only be good for a day or two after opening.

The big name factory processed milk and milk products also tend to go bad faster, so it really is important to check the date if you're not going to use it all within a few days.

Around here, local sourced pasteurized whole milk is actually good for the full two weeks, once you open it.

Haele