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multiple use of S-O4 yeast cake
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Topic: multiple use of S-O4 yeast cake (Read 1767 times)
matt_wolf
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multiple use of S-O4 yeast cake
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on:
September 29, 2012, 08:59:03 PM »
I'm planning on brewing a bitter using S-O4 in the next couple of weeks, and I was also planing on brewing a lighter beer using pilsner malt and Sterling hops a couple of weeks later with S189. Now I'm wondering just how strange it might be if I just used the S-O4 yeast cake. Anybody done this?
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Chris Craig
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Re: multiple use of S-O4 yeast cake
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Reply #1 on:
September 29, 2012, 09:13:17 PM »
It's not uncommon to just rack a new wort onto a recent yeast cake, but there are a couple of things to consider:
If, for some reason, your cake is contaminated, you'll pass this on to the new beer...it's happend to me
A full yeast cake is way to many yeast cells to pitch. Over-pitching reduces things like esters that contribute to a beer's flavour. (over-simplified)
If you still want to reuse the cake, consider splitting it in half, or even quarters to get a better pitch rate.
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matt_wolf
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Re: multiple use of S-O4 yeast cake
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Reply #2 on:
September 29, 2012, 09:23:05 PM »
thanks Chris, I hadn't thought about having too much yeast. I was more concerned about what the resulting beer would taste like!
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Richard
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Re: multiple use of S-O4 yeast cake
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Reply #3 on:
September 30, 2012, 11:10:18 AM »
+1 on everything Chris said, over-pitching can help produce a cleaner beer, if that's your thing - however I wouldn't use S-04 for anything you'd want to call "light" as it has a very distinct and strong flavour profile.
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Silence of the Lambics
(Pitched 13/05/2012).
Owed: JQ LSA x 1, Kyle Stout x 1 & IPA x 1.
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multiple use of S-O4 yeast cake