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Old 09-24-2011, 03:18 AM   #1
j-dub
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Jun 2011
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I am making a starter for a Belgian Dark Strong Ale (OG target is 1.075-1.110, recipe on page 244&245 in Brewing Classic Styles). I am planning to pitch approximately 300 Billion cells. I am starting with Wyeast 1762 (100 Billion cells). To get up to 300 billion I was going to build it up twice, a half gallon at a time. I have never done a multi stage starter before. After the first fermentation is complete, should I chill and pour off the first wort before I add the second? Do I just pour the second half gallon right on top of the first and aerate? Or, should I forget the second propagation altogether and just build a single one gallon starter? Thoughts, suggestions, comments?

 
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Old 09-24-2011, 01:17 PM   #2
Nateo
 
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300b cells isn't really that many. You could get there with 1L > 2L stepped starter. I just add more wort to the starter as it's going, then for small starters I just dump the whole thing in the wort. For starters over 4L, I'll crash and decant.

The reason I don't like crashing starters is that your fermentation will be better if the yeast is active and vigorous. Why would you want the yeast to go dormant again right before they make your beer? It stresses the yeast to chill it, then warm it back up.
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Old 09-24-2011, 01:42 PM   #3
MalFet
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As a second point of view, I always crash my yeast starters. When nutrient levels in your starter start to drop out (i.e., when your yeast start to flocculate) they shift their metabolic energies from reproduction to building up reserves of things like glycogen and sterols. Cold crashing, specifically, causes the yeast to build up trehalose reserves that act as an important factor in stress resistance and as a source of quick energy at pitching. Chris White's standar recommendation is 48 hours on the plate and 48 hours in the fridge for each step.
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Old 09-24-2011, 05:58 PM   #4
j-dub
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Jun 2011
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Thanks guys. MalFet do you have any experience with a multi-stage starter. Do you crash in between the build ups?

 
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Old 09-24-2011, 07:04 PM   #5
MalFet
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Quote:
Originally Posted by j-dub
Thanks guys. MalFet do you have any experience with a multi-stage starter. Do you crash in between the build ups?
I do, but it's mostly personal preference.
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Old 09-25-2011, 02:01 AM   #6
HomebrewMTB
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You should get close to 300 billion cells with fresh yeast and a single well aerated 2L starter with a stir plate. And you wanted to do a single gallon starter, two packs would be recommended.

Here is some good info on stepping up yeast starters:

http://billybrew.com/stepping-up-a-yeast-starter

 
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Old 09-25-2011, 04:28 PM   #7
j-dub
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Jun 2011
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Thanks for the advice MTB. Great link!

 
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