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48 hour Yeast starter OK?

dgingras

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Apr 17, 2019
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Chicago, IL I know, I know, no judging.... :)
I decided to make two yeast starters as I will have two 5 Gallon Carboys to fill.
(1) 100 Billion cell Wyeast pkg, in 1.5 quarts of cooled water, first boiled 10 min with 6oz of DME. (times two for two setups).

The dammed things started bubbling an hour after I set the airlocks!

My question: I set this up Thursday night bout 9pm.
I am Brewing Sat morning, and will probably pitch in around 2- 3pm.
Thats about 38 hours?
Is that too long to have the starters going?
I don't have a stirplate, I have my wife swirling them around a bit while I'm at work! :)

 

Oginme

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It will be fine. 

Just a quick comment about yeast starters.  I never put an airlock on my starters.  I want the influx of Oxygen for the yeast cells to utilize for building sterols which help with cell wall health and flexibility.  So I put a loose covering of sanitized aluminum foil over the flasks.  Once the yeast gets past the building stage, the CO2 it will produce will keep more Oxygen from getting into the flask.
 
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