<<Disclaimer: Verify this information before applying it to your situation.>> > >Wine is not safe because the yeast used in fermenting the wine may contain > >gluten. Best to take grape juice unless you know the brand of wine used is > >GF. > > This must be a misunderstanding. The yeast that ferments wine grows > naturally on the grapes, it is not added by the vintner. During the > prohibition people bought grape juice, which had all its yeast bacteria > killed by pasteurization, and made wine by adding sugar and yeast, but > this > is not a respectable way of making wine. Here's my two cents worth: It is my understanding that here in the Napa Valley all of the wineries add yeast to the wine to stimulate fermentation. My family owns a winery and we add yeast, and the many wineries I've toured all mentioned adding yeast. I would definitely confirm with the winery that their yeasts do not contain gluten before going ahead and drinking their wine. Elissa in California