Oktoberfest/Marzen Lager Yeast | White Labs WLP820 Yeast
White Labs WLP820 Oktoberfest/Marzen Lager Yeast: Smooth, Malty Fermentation for Festbier Perfection
Create Authentic German Lagers with a Full-Bodied, Balanced Finish
White Labs WLP820 Oktoberfest/Marzen Lager Yeast is a true Bavarian strain ideal for brewing classic German lagers with a smooth, rich malt character. This yeast is known for its high flocculation and medium-low attenuation, resulting in beers with residual sweetness and fuller mouthfeel. It's perfect for traditional styles like Oktoberfest, Märzen, and other amber lagers where malt complexity and clean fermentation are essential. WLP820 ferments best at traditional lager temperatures and requires proper lagering to achieve brilliant clarity and flavor refinement.
Key Characteristics:
- Attenuation: 65% – 73%
- Flocculation: High
- Alcohol Tolerance: Medium (up to ~9%)
- Fermentation Temperature Range: 52°F – 58°F (11°C – 14°C)
- STA1 Status: Negative
Ideal for Brewing:
- Oktoberfest/Märzen
- Vienna Lager
- Amber Lagers
- Dortmunder Export
- Bock-Style Beers
Why Choose WLP820 Oktoberfest/Marzen Lager Yeast?
- Traditional German Profile: Designed for malt-driven lagers with smooth fermentation and clean finish.
- Fuller Body: Medium-low attenuation creates a pleasant sweetness and round mouthfeel in lagers.
- High Flocculation: Produces brilliantly clear lagers after proper conditioning.
Enhance Your Brewing Process
Pair WLP820 with White Labs Brewzyme to reduce diacetyl during fermentation and White Labs Zinc Buddy for improved yeast performance during cool lager fermentations.
Our Commitment to Yeast Health
SoCal Brewing Supply stores all White Labs yeast strains in temperature-controlled refrigeration with 24/7 monitoring to ensure top-tier viability. We recommend selecting an ice pack and insulated mailer when shipping yeast to prevent heat exposure. It’s normal for ice packs to melt in transit — they help buffer temperature changes to keep yeast healthy.
Explore our full White Labs Yeast Collection for professional-quality strains trusted by brewers worldwide.
Craft rich, traditional German lagers with the authentic profile of White Labs WLP820 Oktoberfest/Marzen Lager Yeast.