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  • WLP820 - OctoberfestMarzen Lager Yeast - White Labs - 5 gallon batch size

WLP820 - OctoberfestMarzen Lager Yeast - White Labs - 5 gallon batch size

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This yeast produces a very malty, Bock-like style. It does not finish as dry as WLP830 German Lager. Dr. White of White Labs also suggests this strain for Canadian lagers. Residual sweetness further helps promote malt nuances while contributing to a balanced finish. The first generation of this strain can be slow, so we encourage using a larger initial culture or scheduling longer fermentation and conditioning times. Great for lagers with a wide gravity range including bocks, doppelbocks, märzens, Oktoberfests and American amber lagers.


We Recommend you make a yeast starter for all lagers. Because of the cold environment you will need about 4 times as much yeast to successfully ferment a lager. If you don't have a yeast starter pitch 2-4 vials at 60-70F and cool to 48-52F within 12-18 hours. To ferment lagers like the German's and Czech's make an active starter of 2000ml per 5 gallons. Pitch at 45-48F and let it naturally rise to 48-52F. Hold your fermentation at 48-52F for 4-6 weeks in the primary. A diacetyl rest is recommended after the last week of fermentation. Raise to 55-58F for 3-5days and crash to 40F. It is normal if lager fermentation takes 3-4 days to show any sign of krausen after pitching yeast.


Attenuation: 65-73%

Flocculation: Medium

Fermentation Temp: 52-58F


For best results we always recommend ordering an ice pack with your liquid yeast, particularly during warmer months and for orders shipped to warm climates.

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