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-   -   super noob mistake, killing yeast with high gravity? (http://www.homebrewtalk.com/f39/super-noob-mistake-killing-yeast-high-gravity-41514/)

miatawnt2b 10-14-2007 03:53 PM

super noob mistake, killing yeast with high gravity?
OK, this seems to me to be a super dumb mistake, and I'd like to know if I'm completely screwed.

Anyhow, I tried making a starter from some leftover DME and water for my german ale/kolsh yeast. This morning I noticed the starter had done nothing. I was confused because my previous starter took off within hours, and I was sure to pitch at 70*, so I began to look for answers. I took a gravity reading of the leftover starter extract, and the hydrometer floated off the charts. Practically molasses. So I attempted to pour off over half of the starter (the yeast had settled to the bottom) and add some pure 70* water to the starter in hopes of bringing the SG to a normal range.

Did I kill my yeast by leaving it 14 hours in this super high sugar mixture?


ajf 10-14-2007 04:19 PM

No, you may have shocked it, but not killed it. It will recover.


miatawnt2b 10-15-2007 12:25 PM

any thoughts on how long it will take to recover?

david_42 10-15-2007 02:46 PM

Probably 3-4 days.

malkore 10-15-2007 04:59 PM

depends, what is the gravity at? too high a gravity and the yeast will be unable to pull in any nutrients through their cell walls. This is one of the main reasons for making a starter for high gravity beers (the other main reason of course is quantity of active cells).

give it time. I doubt you killed it, but if its too thick the yeast will likely remain dormant since they can't pull in nutrients.

miatawnt2b 10-15-2007 07:30 PM

I adjusted the starter gravity after I figured out what I had done to about 1.045. I guess I'll wait and see. Thanks for your help!

miatawnt2b 10-16-2007 12:44 PM

yep, the yeast woke up today. Thanks all!

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