What Is UHT, Or Ultra-Pasteurized, Milk?
Ultra-high temperature, or UHT, milk is ultra-pasteurized milk that comes in sterilized containers.
They seem to be treating them as synonyms, but apparently they are not. Or, I suppose, “Ultra Pasteurized” has a specific meaning when it appears as a label that’s not quite the same as the common meaning (which would include UHT).
In short, yes, I was talking about UHT and I see that thorny_locust was referring to something else. But given that your own link conflates the two, I’m not going to accept fault in the confusion .
The difference is in the packaging, where UHT requires a hermetic seal (i.e., tetrapak, etc.) and totally sterile conditions throughout, but plain ultra-pasteurized uses conventional packaging. The result is that UHT is shelf-stable for 6+ months, while ultra-pasteurized requires refrigeration and lasts 30-90 days.
As a single person, I have been known to look at e-dates on highly perishable things, and conversely, when I was preparing food for the soup kitchen, I would take short-dated things because I knew they would be used almost immediately (and were often discounted).
Well, the sell-by-February 23d quart of milk I scored from the back of the supermarket display is only about 1/5 consumed, so pretty soon we will be sniff-testing it before adding to cereal.
If only I had long enough arms to reach into the back storage area…
Sort of… what I’m saying is that stores will/should adjust to have the most recent expiration dates within the window of what people are choosing to buy, if there’s a consistent and clear pattern. For example, if stores find themselves selling out of the milk that expires 8 or more days from now, and they find themselves throwing away a lot of milk that expires in 7 days or less from now, then they need to adjust their inventory process to keep the shelves stocked with milk that expires in 8 days or more. How is probably up to the store itself- some can just adjust the delivery frequency, some can adjust how they place it on the shelves, and some can use discounts, etc… to move the sooner-expiring milk in a different shelf location.