@sozobe,
Wow! That was fast! Thanks so much, soz.
It even answered a couple of questions I hadn't thought I had.
I bought some of those milk packs that don't need refrigeration thinking they'd be perfect for field trips, etc. Mo said the milk was undrinkable.
It explains why, when I reverted back to our regular brand, Mo declared the milk "too sweet" and asked me to buy the little store milk instead.
The milk is really expensive -- $6.50 for a gallon. Maybe the price is worth it though.....