There is no real expiration date for my latest Deal of the Day, Gossner's U.H.T. Shelf Stable Milk, that I retrieved not from a refrigerated cold case, but from a regular room-temperature grocery shelf. I have seen this type of milk for a while now, but I never picked up a carton - until this year when I started seeing these cardboard packages in my local Dollar Tree.
Milk is extremely perishable so I stayed away from it. But at a buck for a quart of milk I thought, why not try it now?
Hey, it's just regular milk that is heated to 282 degrees and held for several seconds, then cooled to 70 degrees in a continuous pressurized system. Basically the milk is overheated for extra shelf life, and can be stored at room temperature until you open the box. Once opened, the milk carton should be kept in the refrigerator, like regular cold milk from a cold deli case.