Shelf safe milk is real Grade A milk that doesn’t require refrigeration until it’s opened (no preservatives added). Single-serving cartons can be stored in the pantry for up to six months without refrigeration. It’s a convenient and healthy way to get the nutrition from calcium-rich milk on car trips, while camping, at the park…even at the beach. Freeze a few cartons the night before and toss into a sports bag, picnic basket or cooler, and it will be the right temperature when you’re ready to enjoy it. If your family doesn’t drink it all during the trip…just take it home and put it back in the pantry.
Um, yeah. That's a direct quote from an email I got from "Milk Unleashed" - the marketing arm of the shelf stable milk packaging conglomerate.
First of all, have you ever frozen milk? My mother used to do that, in her singularly frugal way. The milk, when defrosted, is gross. It separates, it develops grainy clumpiness, it's not something you want to drink, ever. Maybe you could put it in a cake. Maybe.
Second, I am mystified by the idea that the milk packagers are suggesting that the shelf stable boxes be frozen for enjoyment at picnics, because even Horizon, a company that packs milk in aseptic packages, says:
Freezing is not recommended for fluid milk, half-and-half or cream. Although freezing is unlikely to alter milk’s nutrition, it will change its consistency. Milk that has been frozen and thawed in the refrigerator can be used in baking and cooking.
And if you shouldn't freeze it in the first place, do you really want to return the unused but now-defrosted milk to your cupboard to save for the next picnic?
The one hand is not speaking to the other hand.
In our house, we have a thoroughly first-world milk problem. We've had a milk delivery service for some years. Every week, we get butter and eggs and four half gallon glass bottles of 2% milk, deposited in an insulated box at the bottom of the driveway. As a result, the child who lives in our house has become a milk snob. If we run out and have to get supermarket milk in a plastic bottle or cardboard box? She won't drink it. She won't drink the milk at school, because it comes in a cardboard container. Glass bottles for my princess, or no milk at all.
So, Tetra Pak? You were barking up the wrong tree.