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Old 05-14-2010, 08:58 PM   #1
b33risGOOD
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Default Question about my primary

For primary I use something like a 12 gallon glass damijohn for my 5 gallon batches. I do this because I already own these. In doing this the damijohn is always only half full which means lots of head space.

Will this have an effect on the taste of my beer? So far I have only used simple kits and had decent results.

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Old 05-14-2010, 09:06 PM   #2
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The additional air in the head space might delay the beginning of fermentation, but that means more yeast cells. Once the fermentation starts, the headspace will be full of CO2.

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Old 05-14-2010, 09:06 PM   #3
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For a primary, you shouldn't worry. The CO2 created in the wort by the yeast is pushing the O2 out. As CO2 is heavier than O2, it tends to push it outside.

I'm primary fermenting 2.5 gallons of beer in a 8 gallons primary fermenter without ill-effect.

For a secondary fermentation, this would be different. You would need to minimize the headspace.

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Old 05-14-2010, 09:08 PM   #4
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ok, i figured the co2 would puch the air out. I usually have signs of fermentation very quickly so no harm done i suppose.

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