Red Star Premier Rouge Red Star UCD #904 Species : Wine Fermentation Temp Range (°F) : 64-86 Apparent Attenuation Range (%) : n/a Flocculation : Low Alcohol Tolerance : 16% Pitching/Fermentation : Red Star Premier Rouge wine Yeast(Davis 904), a strain of Saccharomyces cerevisiae, has been derived from the collection of the Institute Pasteur in Paris.It is a strong, even fermenter that produces full bodied reds. This yeast encourages the development of varietal fruit flavors, balanced by complex aromas, especially when using grapes of the Cabernet family. Notes : It may be necessary to cool the fermenting must to prevent unwanted temperature increase. This yeast is reported to give character to less robust red grapes, or those picked before optimum development. Best Styles : Berry and Cherry Wine, Cabernet, Gamay, Merlot, Pinot, Syrah, Zinfandel Looking for a Liquid or Dry Yeast Substitution? The brewers at Adventures in Homebrewing have tried most of them. The following are some suggestions that have worked for us. Liquid Yeast Substitution : White Labs 750, White Labs 715 Dry Yeast Substitution : n/a