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Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Wyeast 3787 starter help
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Old 09-30-2012, 06:55 AM   #1
strongale28
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Default Wyeast 3787 starter help

hello,
In preparation for my fist 5 gallon batch (belgian dark strong ale) I made a yeast starter with wyeast 3787. Mr. malty said to do a 3.6L starter intermittent shaking. I used a 1 gallon glass jug thinking i would have enough head space, but after shaking it once to give it oxygen it overflowed quite a bit. After that i didn't shake it anymore. The starter continued to ferment overflowing with foam for most of the time until it finished. Also the foil came off a couple times leaving the starter open to air for a couple hours, not sure if it might have gotten infected with something. The starter is currently in the fridge, and i was wondering if i should decant and pitch it or have i lost way to many yeast cells when it was overflowing or it might be infected??

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Old 09-30-2012, 04:01 PM   #2
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Go to the Northern Brewer documentation page for yeast pitching rates. It describes how to make a two step propagation starter. You can basically combine a 2L starter and a 1L starter (after decanting) and make billions of yeast with a small container. I used that method with 3787 and had good success. I also had lots of foam but plenty of head space to let it rise.

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Old 09-30-2012, 04:04 PM   #3
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http://www.northernbrewer.com/docume...chingRates.pdf

Here it is!
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Old 09-30-2012, 04:43 PM   #4
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Most likely you did not lose that much, if any yeast so I would not worry about it. In addition, even if the foil came off there was CO2 pushing out so nothing nasty got in. Next time go to http://www.yeastcalc.com and calculate a stepped starter

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Old 10-01-2012, 02:18 AM   #5
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thanks for the replies

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