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Old 11-16-2009, 04:21 PM   #1
tgentry2
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Default 9 Liter Yeast Starter?

Has anyone ever heard of using a 9 Liter Yeast Starter? This would be near 3 gallons of a yeast starter.

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Old 11-16-2009, 04:24 PM   #2
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People use different sized yeast starters for all sorts of different beers. The larger the beer, the larger the starter. I have personally never made a 2.5 gallon starter, but I know that 1 gallon starters are very common here on HBT. Why exactly do you feel you need a 9L starter?

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Old 11-16-2009, 04:28 PM   #3
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This is from BYO recipe from last month's magazine. They claim that the proper pitch rate is 4 packages of liquid yeast or a 9 Liter starter. The recipe is for a 5 gallon batch.

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Old 11-16-2009, 04:38 PM   #4
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You're not pouring in 9 liters of liquid though... when you do a larger starter, pour off the spent starter wort and use some new wort to get the yeast cake out of the starter container and into your fermentor. This way, you aren't diluting your wort with lower gravity starter wort. That said, 9 liters sounds huge. Not sure what kind of beer would necessitate that.

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Old 11-16-2009, 04:46 PM   #5
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High gravity beer with a "simple starter", that seems very reasonable. Some people just make a smaller beer and use that as a starter, some will use a stir plate which allows you to use a much smaller starter. In this case, a 9 liter starter becomes a 3.4 liter starter.

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Old 11-16-2009, 05:03 PM   #6
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It's a Bohemian Pilsner. I guess I'll make the 9 liter starter and rack off the wort and pour the new wort on top of the yeast cake.

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Old 11-16-2009, 05:56 PM   #7
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I have never done this large of a starter before. The starter is almost the same size as the batch itself. I have a couple of questions here if someone could help:

1) Since I am planning to remove the wort and just use the yeast cake how long would you let this ferment as a yeast starter?

2) As this is a lager would you ferment your yeast starter at lagering temperatures?

Thanks.

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Old 11-16-2009, 06:38 PM   #8
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I've made a 8-9 L starter before. Then I never ended up using it. That was kind of a bummer. I just never got around to brewing the batch.

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Old 11-16-2009, 07:03 PM   #9
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perhaps it's a typo and should have been a .9 liter (one quart) starter...

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Old 11-16-2009, 08:14 PM   #10
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http://www.mrmalty.com/calc/calc.html

Play around with it. Even shaking once in a while makes a big difference on how big of a starter you need.

1. Long enough to ferment out. A few days usually does it.
2. No. If it's just a starter, the off flavors from higher temps don't matter, and the yeast will be more active at higher temps.
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