White Labs Yeast | WLP004 Irish Ale | Beer Yeast | PurePitch® Next Generation | Industry Leading Viability | 150 Billion Cells

• WLP004 is from one of the oldest stout-producing breweries in the world and shines in malty British styles like stout, porter, and brown ale
• Finishes dry and promotes roasty notes
• PurePitch® Next Generation offers a precise cell count across all strains so you can calculate the exact pitch rate you need for every batch
• Scan the barcode on the back of the package and enter your wort stats into the Pitch Rate Calculator
• White Labs Yeast has been producing high-quality brewer's yeast since 1995 and continues to raise the bar in the art of fermentation
• Don't need a full package? Put the lid back on and store in the refrigerator for your next batch!

From one of the oldest stout producing breweries in the world. It produces a slight hint of diacetyl, balanced by a light fruitiness and slight dry crispness. Great for Irish Ales, Stouts, Porters, Browns, Reds and a very interesting Pale Ale. To ferment this yeast properly pitch at 65°F and let it rise to 67-68F. This strain can be used in all ales because of its clean crisp character it produces. Irish ale can also be used to help finish a beer's stuck fermentation.

PurePitch® Next Generation—now with more yeast, get a foolproof fermentation without a starter! Just twist the cap & pitch!

Why PurePitch Next Gen versus other options?
Typically yeast manufacturers use a range for how many yeast cells are going into each package. This can vary widely, especially from strain to strain. Next Gen offers a far more precise cell count across all strains allowing you to use the Whitelabs exclusive pitch calculator. Simply scan the barcode on the back of each package to be taken to their online calculator. Enter the volume, strength, and pitching temperature of the wort you are fermenting and the calculator tells you exactly how much yeast to pitch. You will be fermenting like a professional brewer, using the same concentration of yeast every time and enjoying more consistent results. Don't need a full package? Put the lid back on and store in the refrigerator for your next batch. Whitelabs has also increased the viability (the number of living cells in the package) over the shelf life of the yeast. Next Gen strains are grown in their unique, small-batch reactors to assure freshness and then packaged in a special film that allows for off-gassing, assuring that their viability is absolutely industry leading.

Attenuation: 69-74%
Flocculation: Medium to High
Alcohol Tolerance: 5-10% ABV
Optimum Fermentation Temp: 65-68°F
Cell Count: 150 Billion

For best results we always recommend ordering an ice pack with your liquid yeast.

Please Note: When choosing an ice pack option beware that the liquid yeast will not arrive cold even when shipped together. Ice packs and insulated mailing options are designed to keep the yeast colder for longer during shipment, but they will not ensure that your yeast arrives cold. We will not replace liquid yeast that arrives warm. During warmer months we strongly recommend you choose dry yeast.