Berkeley Hills Sour Yeast | WLP4665 | Vault Strain autosiphon and helps prevent sluggish secondary

and helps prevent sluggish secondary fermentation

where Kolsch-style beers have been perfected for centuries

Festbier and Märzen

and other fermentation tools commonly used in homebrewing

Explore more limited releases from White Labs Yeast here

Berkeley Hills Sour Yeast | WLP4665 | Vault Strain autosiphon and helps prevent sluggish secondaryWhite Labs Berkeley Hills Sour Yeast WLP4665 A Unique Vault Strain for Balanced Sour Ales White Labs Berkeley Hills Sour Yeast (WLP4665) is a Vault strain designed to produce balanced sour ales with vibrant complexity. This strain offers a blend of Brettanomyces and Lactobacillus, creating a harmonious profile of fruity esters, mild funk, and tart acidity. Ideal for kettle sours, Berliner Weisse, or experimental sour ales, WLP4665 is perfect for