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Old 03-14-2012, 03:25 AM   #1
JonBoy47
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Default Hot Yeast Starter

Not sure if this is an issue or not. I have a stir plate that also has a heating element. I have never used the heating element before but I figured today would be a perfect test. I set it to the lowest heat level and it was barely warm to the touch. It seemed perfect. I placed my yeast starter on it and checked it about 2 hours later. The temp was at about 74 degrees which I figured was fine for a yeast starter. I left for work and when I came back home the temp was about 84 degrees. Is this a problem? I know it would be if it was a batch of beer but since it is just a starter and im decanting the beer anyway does it matter? Also, should I let it remain at that temp? Or turn the heater off? Any help would be appreciated.

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Old 03-14-2012, 03:57 PM   #2
william_shakes_beer
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What tpe of yeast? Is this within the temp range for that strain? In general yeast propogates faster at warm temps. I usually keep my starter warm by leaving the under-counter lights in the kitchen on.

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Old 03-14-2012, 04:12 PM   #3
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I used wlp001. It says the optimum fermentation temp is 68-73.

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Old 03-14-2012, 06:16 PM   #4
dcp27
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its fine, just decant as planned

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Old 03-14-2012, 07:10 PM   #5
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From mrmalty.com

You'll get more yeast growth the warmer your keep the starter (up to 90F +), but yeast viability at these higher temperatures start to suffer. For lager yeast, this can be a real problem in creating more petite mutants and causing poor flocculation. In general, keep the temperature of the starter in the mid 70s Fahrenheit for ale yeast and a few degrees lower for lager yeast.

http://www.mrmalty.com/pitching.php

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Old 03-14-2012, 09:53 PM   #6
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I guess the question would be which is the lesser of two evils...10 degrees too hot or 10 degrees too cold?

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