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Old 01-14-2009, 05:00 PM   #1
Jan 2009
Posts: 15

Does stirring the yeast in vigorously aerate the wort enough? Or do I need to do more?

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Old 01-14-2009, 05:08 PM   #2
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Shake the bucket/Carboy for a few minutes. Some people use oxygen and aeration stones. Just stirring won't give you as much oxygen as you could get from a simple vigorous shaking of the vessel for a few minutes. yeasties NEED Oxygen.
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Old 01-14-2009, 05:17 PM   #3
Dec 2008
Central Jersey
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When siphoning from the kettle to the carboy I just had the hose all the way up at the top and let it splash in and gave it a 15 second shake once it was full and fermentation took off within 12 hours.

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Old 01-14-2009, 05:20 PM   #4
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Dec 2008
Southeastern PA
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Don't worry about it. Unless you did a full boil for 60+ minutes, your wort has enough oxygen for the yeast to do its job. Especially if you're using dry yeast.

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Old 01-14-2009, 05:20 PM   #5
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Oct 2007
Littleton, CO
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More is better, although good dry yeast doesn't seem to be as sensitive.


This helps

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Old 01-14-2009, 05:22 PM   #6
Jan 2008
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I just finished a brown ale that I just drained into the carboy from my chiller with the hose at the top of the carboy to get some areation. I had a good solid stream of bubbles within 4 hours. The only stirring mine gets is when I move the carboy into the house after brewing.
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Old 01-14-2009, 05:24 PM   #7
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Mar 2008
Atlanta, GA
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more aeration helps the yeasties set forth and multiply....I find it helps get an active fermentation up quickly. But you still get good beer not aerating the wort. I remember my first few brews I didn't do any aeration because I didn't know about it. Probably just the process of dumping the boil and adding more water to the fermentation bucket helped introduce enough oxygen for the beer to ferment fully. Well that, and I think I was mainly using dried yeast that I'd mix in. So, my early brews could be considered the minimum aerate by stirring method. When I started getting into all grain, then I added an aeration stone in case there was being too much oxygen being boiled off with all the wort needing a boil.

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Old 01-14-2009, 05:25 PM   #8
Nov 2008
Southern Oregon
Posts: 271

+1 to cheap and easy aeration gadget. I use that and hold it at the top of the bucket. Has worked very well. See results in about 4 hours on my last 3 batches.
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Old 01-14-2009, 05:42 PM   #9
Jan 2009
Posts: 15

Thanks, Yea I've got my second batch in primary fermenter 1st batch in bottles. I stirred both, the airlock started bubbling within 24 hours and stopped completely within 3 days. Then on the 7th day I bottle, no secondary, but I'm doing a hefe so I want it cloudy!

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Old 01-14-2009, 06:12 PM   #10
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Feb 2008
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I've read a study where they claim that simply shaking the fermenter does a better job than even O2 and stones. I run my hot wort through a counter-flow chiller and through a strainer, and drop it hard into the bucket.

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