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Old 03-09-2013, 01:35 AM   #1
andy6026
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Default Ok to hydrate yeast the night before?

I'm going to attempt my second batch tomorrow but my assistants have other plans, so I'll be doing it alone.

I don't fancy prepping (hydrating) the yeast in the kitchen while the burners unattended in the back yard, so can I hydrate it tonight, stick it in the fridge overnight and then just bring it up to wort temp in order to pitch it? If not, what are my options?

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Old 03-09-2013, 01:38 AM   #2
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Rehydrate while your wort is cooling, only takes 20 minutes or so.

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Old 03-09-2013, 01:41 AM   #3
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(un)fortunately I've got a 50', 1/2" wort chiller that brings it down to temp in about 10 minutes. I wouldn't leave that running while i'm in the kitchen prepping yeast, at least not at my experience level.

Is that a no-no on the night before?

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Old 03-09-2013, 01:46 AM   #4
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I'm no expert but on all the yeast instructions I've read say don't wait more than 20-30 minutes to pitch once the yeast is hydrated.
It won't hurt the wort to sit a few minutes while you hydrate the yeast. Just be sure to keep it covered.

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Old 03-09-2013, 01:46 AM   #5
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10 mins is quick! You could kill the flame and let it just stay hot for a few mins while you start the rehydrating. Let that go a few mins and then start cooling. Also what temp to you cool to? You probably want o shoot for around 70 degrees.

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Old 03-09-2013, 01:49 AM   #6
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I wouldn't do it the night before either. If I couldn't multitask at all, I'd rather cool then wait another 20 minutes and pitch.

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Old 03-09-2013, 01:51 AM   #7
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Tomorrow if I do it, it'll be my second batch. The first I pitched at 75, although I'll probably aim for 70 on tomorrow's batch. I think partly the reason for it coming down so fast is that the water pressure in my house/hose is incredibly strong. Showers are painful at full blast, and I didn't turn the chiller on full blast for fear of blowing apart the elbows I put in the chiller (it's a home-made jobby, and while I may not qualify as the worst handy-man in the world, my chiller is far from the prettiest ever made).

Hmmm, according to Papazian's instructions it takes at least 30-40 mins to prep the yeast, but I'm not sure if his instructions are out of date? What's the fastest way to effectively hydrate yeast?

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Old 03-09-2013, 01:54 AM   #8
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I've read it drains all the yeast nutrients they add to the pack, so it's not optimal to do the night before. You just want ~95-105 degree water for 20 minutes, 100ml of water for 11g packet.

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Old 03-09-2013, 01:54 AM   #9
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I once underestimated how long my whirlpool would take to settle and I ended up pitching yeast that was 3 hours rehydrated. There were no ill effects. You could do it before you begin your boil.

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Old 03-09-2013, 01:55 AM   #10
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I would think 20 mins should be okay. There are plenty of posters who claim not to rehydrate at all with not adverse effects...

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