White Labs PurePitch - WLP004 Irish Ale Yeast

White Labs PurePitch WLP004 Irish Ale Yeast: This yeast is from one of the oldest stout-producing breweries in the world. Its great for many beer styles but really shines in malty British styles such as stouts, porters and brown ales. Medium attenuation helps with a dry finish that promotes roasty notes. Esters help round out the overall flavor making a soft drinkable stout.

Recommended For: Blonde Ale, Brown Ale, Cider, English Bitter, English IPA, Porter, Red Ale, Scotch Ale, Stout, & Sweet Mead

Attenuation: 69 - 74%

Flocculation: Medium to High

Optimum Fermentation Temp: 65 - 68F (18 - 20C)

Alcohol Tolerance: 5 - 10%

STA1 QC Result: Negative

Concerned about shipping? Don`t be! We ship all of our liquid yeast with ice packs during the warmer months.

White Labs NEW PurePitch has improved shelf life through process improvements and laboratory analysis, White Labs monitor the glycogen content of the yeast cells to give them more energy when starting a fermentation.

Each PurePitch package pitches a consistent 7.5 million cells/mL.

PurePitch Next Generation features a breathable proprietary dual-layer film designed to allow for more effective off-gassing to reduce product inflation and deliver higher viability and shelf life for the yeast. While the industry standard shelf life is 2-4 weeks, PurePitch Next Generation achieves an impressive five to seven-month shelf life. The cap allows for ease of use, no more scissors or fumbling with two-layer film, and the option to open and reseal for sampling or using partial pouches.

A QR code on each package directs you to all the information you need to make the best beer: the quality report of every lot, additional strain-specific information, data, and recipes. ?White Labs is the industry leader in quality with the same quality and care taken for every culture, including proprietary qPCR methods (developed with Invisible Sentinel) for higher limits of detection. The online pitch rate calculator will recommend the right amount of yeast for a foolproof fermentation or allow you to customize the amount based on your desired pitching rate.