Does heat kill the live cultures in buttermilk?

Yes, heat can kill the live cultures in buttermilk. Probiotics, such as Lactobacillus and other beneficial bacteria, are sensitive to high temperatures. When buttermilk is exposed to heat, these live cultures can be destroyed, reducing the probiotic benefits. It’s best to consume buttermilk cold or at room temperature to preserve its beneficial bacteria.

For more information on how heat affects probiotic-rich foods like buttermilk, check out our full guide:

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