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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Does your rehydrated yeast foam up a little bit?
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Old 11-15-2013, 08:03 PM   #1
Elysium
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Default Does your rehydrated yeast foam up a little bit?

I have come across this info that rehydrated yeast slightly foam.....now my question is "why doesnt mine foam at all?"

I use safale US-05 and follow the instructions of Chris White (author of the book "Yeast"). I normally use bottled water that I boil before use.

Any thoughts? Or people who got good results and the yeast didnt foam at all?

P.S. So far sanitization was not 100% okay.....I dont know if that might have been the problem.

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Old 11-15-2013, 08:42 PM   #2
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I have never seen any noticeable foam on re-hydrated dry yeast. If you aerated it, which is not recommended, it would likely have foam.

Bob

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Old 11-15-2013, 08:52 PM   #3
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I usually get some foaming with US-05 when I rehydrate. It's not like a krausen but there is some foam that I then stir into a creamy slurry and pitch.

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Old 11-15-2013, 08:54 PM   #4
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I get at least a little foam on the surface when rehydrating most yeast strains, but some foam much more than others.

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Old 11-15-2013, 09:14 PM   #5
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Quote:
Originally Posted by BobBailey View Post
I have never seen any noticeable foam on re-hydrated dry yeast. If you aerated it, which is not recommended, it would likely have foam.

Bob
I guess it gets a bit aerated when you stir it a bit, but why wouldnt it be okay to add air? I dont aerate it though, just asking.
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Old 11-15-2013, 09:19 PM   #6
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Aerating the hydrate should be fine. I don't...well,not that much,but I do get a little foam on top.

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Old 11-15-2013, 09:48 PM   #7
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+1, aeration won't hurt anything while the yeast rehydrates. Nothing to worry about.

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