OH...whoops... @lalaland
Same is true of the buttermilk. The old fashioned "real" buttermilk was the liquid leftover from making butter with the cream. The cream was usually gathered from the milk over a period of days until enough was gathered to make the butter. The predominance of the lactose was in the milk - not the cream. But the cream was also being "cultured" with a "wild fermentation" in which the LABs were growing and producing over the time it took to gather enough to make the butter. Often the cream was allowed to sit a room temperature to "sour" (or culture in our modern terms) the cream for a "cultured butter"... Again, the LABs at work.
Today's "cultured buttermilk" like you purchase in the store is usually skimmed milk with a culture added to "sour" it - again, a LAB culture which digests the lactose and produces lactic acid. So, again, this is a product in which the level of lactose should not be an issue.
Same is true of the buttermilk. The old fashioned "real" buttermilk was the liquid leftover from making butter with the cream. The cream was usually gathered from the milk over a period of days until enough was gathered to make the butter. The predominance of the lactose was in the milk - not the cream. But the cream was also being "cultured" with a "wild fermentation" in which the LABs were growing and producing over the time it took to gather enough to make the butter. Often the cream was allowed to sit a room temperature to "sour" (or culture in our modern terms) the cream for a "cultured butter"... Again, the LABs at work.
Today's "cultured buttermilk" like you purchase in the store is usually skimmed milk with a culture added to "sour" it - again, a LAB culture which digests the lactose and produces lactic acid. So, again, this is a product in which the level of lactose should not be an issue.
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