I used to empty the one quart envelopes of milkman into a 1 liter plastic bottle, add enough water to fill it 7/8ths full, then shake it like a bad little monkey until the foam locked the liquid up. I'd let it sit to reduce the foam and shake it again, repeating this process until I was satisfied it was as fully mixed as I could get it. Ice cold, it tasted just like fresh milk to me at the time.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)