WLP041 Pacific Ale Yeast. A popular ale yeast from the Pacific Northwest. The yeast will clear from the beer well, and leave a malty profile. More fruity than WLP002, English Ale Yeast. Good yeast for English style ales including milds, bitters, IPA, porters, and English style stouts. Attenuation: 65-70. Flocculation: High. Optimum Fermentation Temperature: 65-68F. Alcohol Tolerance: Medium.