@LucH Thank you for the additional detail.
I'm with you on avoiding plastic. I now use glass for water and food storage, whenever possible. But, for most of us, there is still plastic with foods that we buy and store.
Strangely, the Alexandre brand milk, the one with the true full milk fat (6%), A2, and 100% grass-fed, uses a plastic bottle. Too bad. They were so close to seemingly having the crème de la crème of milk (pun maybe intended, subconsciously...haha). Not that I could buy this on a regular basis, but if opportunity allowed, it would be nice to get this with glass.
It's also worth noting that Straus's pasteurization temp and time are on the higher end of the ~72°C/161°F, Flash classification. Per their web site: "76.6°C/170°F for 18 seconds".
P.S. I have to point out, to correct my comments above, that Alexandre's 100% grass-fed is not 6% milk fat. Their Whole Milk, at 80-20%, grass-corn, is the 6% milk fat. It's also worth pointing out that Alexandre's 100% grass-fed has 5x the amount of vitamin D per serving.