White Labs Yeast | WLP004 Irish Ale | PurePitch® Next Generation

Brew rich, malty ales with White Labs WLP004 Irish Ale Yeast (PurePitch® Next Generation). This versatile strain produces a smooth, dry finish with subtle roast and malt complexity—perfect for stouts, porters, and red ales. Its balanced ester profile and medium-to-high flocculation yield beers with depth, clarity, and a classic British character.

Each 70 mL PurePitch® pouch treats a 5-gallon batch. With 69–74 % attenuation, a 65–68 °F fermentation range, and up to 10 % alcohol tolerance, WLP004 delivers consistent performance across a wide range of malt-forward styles.

Key Features:

• Smooth, dry Irish ale yeast

• Medium-high flocculation for clear beers

• 69–74 % attenuation; 65–68 °F range

• 70 mL pouch for 5 gallons

• Ideal for stouts, red ales & porters