SACCHAROMYCES BAYANUS Strong strain with a very high alcohol tolerance (>16% vol.). Used to avoid sluggish fermentation and to restart stuck ones with remaining residual sugars. Recommended for sparkling wines processed by traditional or Charmat methods. Red Star Active Freeze-Dried Wine Yeast is packaged in individual 5 gram nitrogen-purged foil sachets. Each sachet is printed with the yeast variety and complete instructions for use with five gallon musts. All Red Star yeasts are gluten free