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Old 02-01-2008, 03:40 AM   #1
Shonuff's Avatar
Feb 2008
Seattle, WA
Posts: 740
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I want to make a 2.5 gallon recipe. Would one use the same amount of yeast as a 5 gallon recipe (one packet/vial of yeast)? Or would one cut the yeast amount in half.

Would there be any problems fermenting a 2.5 gallon recipe in a 5 gallon carboy?

Thanks for your help!

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Old 02-01-2008, 04:44 AM   #2
flowerysong's Avatar
Apr 2007
Ann Arbor, MI
Posts: 286
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Use the same amount of yeast. It's difficult to pitch too much yeast as a homebrewer, and underpitching isn't a good idea.

Fermenting a 2.5 gallon batch in a 5 gallon carboy shouldn't be a problem, but the headspace might prove problematical if you're planning on extended bulk aging.
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