Rockpile RP15 yeast 25 g. 17% alcohol tolerance. Moderate speed fermenter, used in concentrated reds for a rich, lush, balanced mouthfeel. Characterized by red fruit and mineral notes. Low to moderate nitrogen demand, benefits from careful rehydration with Go-Ferm. Recommended for Syrah, Zinfandel, Merlot, Cabernet Sauvignon.