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WLP925 HP Lager - White Labs Yeast
WLP925

WLP925 HP Lager - White Labs Yeast

Yeast  
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Description

The new HP Lager strain from White Labs is ideal for fermenting under pressure.  When beer is fermented under pressure, it allows for the production of a clean flavor profile, even when fermenting a lager at room temperature.  Fermenting under pressure is advantageous in that it reduces ester and fusel alcohol production, reduces or negates the possibility of oxidation, carbonates the beer during fermentation and  allows you to ferment warmer than you would otherwise. Check out The Fermentasaurus if you are in the market for an affordable fermentor that holds pressure.

Use to ferment lager beer in one week! Ferment at room temperature (62-68°F) under 1.0 bar (14.7 PSI) until final gravity is obtained, generally in one week. Lager the beer at 35°F, 15 PSI, for 3-5 days, to condition. Sulfur production is strong first 2 days, then disappears by day 5. Do not need to carbonate, since at 1 bar entire time.

Attenuation: 73-82%
Flocculation: Medium
Optimum Fermentation Temp: 62-68

For best results we always recommend ordering an ice pack with your liquid yeast.

Item # WLP925
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.14LBS
Community Q&A

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Fermenting under pressure for shortened lagering
Brian H on Mar 1, 2019
Pressure fermentations
Adrian L Febre on Jan 23, 2019
Fermenting under pressure for shortened lagering
Brian H on Mar 1, 2019
10-day Helles
Adrian L Febre on Feb 2, 2019
Pressure fermentations
Adrian L Febre on Jan 23, 2019
Fermenting in vented Cornelius Keg; also for speeding up lager ferment
William E on Jul 31, 2018
10-day Helles
Adrian L Febre on Feb 2, 2019
Fermenting in vented Cornelius Keg; also for speeding up lager ferment
William E on Jul 31, 2018
Reviews

4.7 / 5.0
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Believe the claims
Honestly, I'm pretty staggered by this yeast. I gave it a fair head start with two starters, yeast nutrient in the boil, and I oxygenated inline to spec, but man did I put this yeast through the wringer. The primary temp swung from probably 60-68F over the course of a week, and due to issues with my spunding valve (read: a leak), and a tank that ran out, the pressure ranged from some 30 PSI down to 15, slowly down to 5, and then back up to 15 over two days or so (though mostly after primary fermentation); and after less than two weeks, the resulting Rauchbier was very clean. Ester suppression, my friends. By homebrewing standards, near spotless, and by professional standards, believably lager-y (for reference, I work and sometimes brew at a small but up-and-coming brewery, so I'm no pro but I'm not a neophyte either).

TL;DR this yeast really does ferment in 7, lager in 3. Also, you can easily let the yeast build pressure from zero using a spunding valve, especially if you give it a healthy dose of O2 and it's reasonably fresh and active
January 31, 2019
Purchased
4 months ago
Won’t use “regular” lager yeast again. No stall out, quick, clean, has fermented down to 1.010 every time.
April 12, 2018
Purchased
1 year ago
Fermented at recommended range 65F and 15 psi. Carbs up nicely with natural carbonation. Overall character is little more ale like with light fruity esters but definitely has a slight lager character as well. Great yeast for a cream ale.
January 22, 2018
Purchased
1 year ago