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Old 03-28-2010, 08:23 PM   #1
Wulfonce
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Feb 2010
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According to my beer kit instructions adding oxygen to the beer must be avoided. However I've read that sometimes people will airate the beer. At what stage in the brewing process does this happen in? What does airating do?

 
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Old 03-28-2010, 08:25 PM   #2
Bobby_M
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aerate before fermentation then not after.
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Old 03-28-2010, 08:50 PM   #3
songstre
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Wulfonce, the idea behind aeration is that you want to introduce your yeast to a well oxygenated environment where they will thrive and perform.

You do not want to introduce oxygen later on as it will cause oxygenation and introduce off flavors.

 
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Old 03-28-2010, 10:08 PM   #4
SumnerH
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Aerate after chilling and before pitching yeast.

Avoid aerating when the wort is still hot--there's a lot of evidence that hotside aeration (HSA) isn't a major problem unless you really overdo it, but there's no real reason to go out of your way to aerate hot wort either.
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