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Health Q&A: Lactose Intolerance and Malolactic Fermentation
Q. I am lactose intolerant. Should I be concerned about a Chardonnay that has gone through malolactic fermentation? -- Leonard, Derry, N.H.
A: No. Wine doesn't contain lactose. Malolactic fermentation is a secondary fermentation that occurs in most wines. It is a natural process that converts malic acid into lactic acid, which can add complexity to whites and soften reds. But lactic acid is different than lactose, so no need for concern.
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