Rhine Kölsch Yeast | White Labs WLP4061 | Vault Strain

Rhine Kölsch Yeast – WLP4061 Vault Strain from White Labs

Authentic Kölsch Character with Lager-Like Finish

White Labs WLP4061 Rhine Kölsch Yeast is a limited Vault strain sourced from a traditional brewery in Cologne, Germany—the birthplace of Kölsch beer. This strain offers the hallmark clean, crisp profile of a lager, while preserving a light fruitiness and malt clarity that define the style.

Expect a smooth fermentation with balanced ester expression and a dry, refreshing finish. This yeast is perfect for authentic Kölsch, light German ales, and other hybrid lager-ale styles.

Key Characteristics:

• Strain Type: Ale (Kölsch-style)
• Origin: Cologne, Germany
• Flocculation: Medium
• Attenuation: 73% - 80%
• Alcohol Tolerance: 10% ABV
• Optimal Fermentation Temperature: 65°F - 69°F (18°C - 21°C)
• Available Formats: PurePitch® Liquid (70 mL)

Style Recommendations:

• Kölsch
• German Blonde Ales
• Hybrid Lager-Ales

Why Choose This Vault Strain:

This limited-release Vault strain is only available while supplies last and gives brewers a chance to create exceptionally clean and traditional Kölsch beers with an authentic yeast profile. Once it's gone, it won't return until White Labs re-releases it again.

Our Commitment to Yeast Health

At SoCal Brewing Supply, we take yeast storage and viability very seriously. We ensure yeast is always stored under optimal conditions, with 24-hour monitoring of refrigerator temperatures to prevent spikes that could negatively impact yeast health.

For liquid yeast orders, we recommend shipping with an ice pack and insulated envelope to ensure your yeast arrives in top condition. It's normal for ice packs to melt during transit; their purpose is to protect the yeast from extreme temperatures caused by external weather conditions.

If you're interested in exploring more strains, check out our full selection of White Labs Yeast.