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Cultured antonyms. Top cultured antonyms (opposite of cultured) are uncultured, wild and barbarous.
On a health note, I strongly believe that cultured (hence unpasteurized) dairy products encourage good intestinal flora and are healthier then pasteurized products and homogenized/pasteurized milk. That is why I make cultured dairy products at home. (as a foot note: Milk for cheese making is pasteurized differently (low temp, long time) then other liquid milk (high temp short time) and never homogenized. It is difficult (not impossible) to make cheese with homogenized/pasteurized supermarket milk.