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Fermenting in a Second Vessel

Experts currently generally agree that fermentation in a secondary vessel is not necessary for most typical homebrew applications.

The main aim in aging in a secondary vessel is to allow the beer to continue aging while removing the yeast that has flocculated out. Long-term storage (a few months, rather than a few weeks) on the yeast may encourage autolysis, which may negatively impact the flavor of the beer.

Some situations where aging in a second vessel would be useful include:

  • Wood aging
  • Long-term bulk aging in general
  • Encouraging an actual second fermentation by adding fruit or other sugars
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