reusing yeast, do I need to wash?

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BoostedF150

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Or can I dump my fresh wort over the entire old yeast cake with trubb and all in the same carbon as the beer before? Btw it is safale 05
 

Obliviousbrew

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That will be overpitching if you are not brewing a very big beer and twice the size of your previous brew I wouldn´t do it. About a thir of the yeast cake is what I have used depending of course of what you are brewing
 

wilserbrewer

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I second about a third of the cake...I stash it in a zip lock bag as I consider them sanitary from the package....very easy.
 

Brulosopher

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BoostedF150 said:
Do I need to wash it though or is it ok to use with all the trubb in it?
You don't necessarily "need" to, but it might lead to a cleaner beer. I've pitched on a full cake before with no issues. Overpitching on a homebrew scale is actually quite difficult to do.
 

Brulosopher

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BoostedF150 said:
What would be the result of pitching on the entire yeast cake other that just waste
Potentially... subtle carry-over flavors from your last batch, particularly if you used a lot of roasted malt or hops.
 

Calder

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What would be the result of pitching on the entire yeast cake other that just waste
- Quick start, lots of kraeusen, and possible blow-off.

- Due to the increased activity, the temperature will rise quickly, and can result in higher alcohols if not controlled.

- Reduced yeast esters due to reduction in reproduction.

- Since there will be little reproduction, the old yeast will have to complete the fermentation. Could possibly end up with a higher FG than if you pitched less.
 
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