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Festbier and Märzen
where Kolsch-style beers have been perfected for centuries
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Highly Versatile: Performs well in both session and high-gravity Scottish styles
Berkeley Hills Sour Yeast | WLP4665 | Vault Strain autosiphon Festbier and MärzenWhite 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