Fermenting under pressure reduces esthers and off flavors, and thus allows fermenting faster and cleaner than otherwise. This is pretty widely accepted and thus gives us two obvious uses of pressure fermentation.
Fermenting Lagers
Lagers are perfect for fermenting under pressure. As in, perfect. Lager yeasts, as a rule, handle quite high pressures well.
Fermenting lagers under pressure allows you to ferment at ale temperatures with no ill effects. You will get a fast, clean fermentation with no off flavors.
The Advantages Of Fermenting Under Pressure :
1.Virtually eliminate the risk of oxidation.
2.Closed, pressure transfers.
3.Faster fermentations.
4.Reduce Off Flavours.
5. Carbonate in the fermenter.
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Please Note: we absolutely cannot guarantee that all lager yeasts can be reliably fermented under pressure. From experience, Lallemand Diamond Lager and Fermentis W34/70 (both dry yeasts) will ferment fast and clean at ale temperatures under pressures of up to 18psi.
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Edited By Daisy
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