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Old 01-22-2012, 05:02 PM   #1
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Default PacMan slow at low temperature

Yesterday I made a clone of Rogue Shakespeare Stout (OG: 1.060). Cooled beer to low 60s and pitched some PacMan slurry.

The slurry is a month old, I did not make a starter, but I have no reason to believe there is any issue with viability. The slurry was about a quarter of the cake from a previous batch.

It's now 23 hours, the fermometer on the fermenter reads 62 F, and the water bath reads 61 F.

I usually ferment this yeast in the mid 60s, so this is lower than my experience. Based on past experience I had expected it to be going crazy by now, and crawling up the blow-off tube.

Does the cold temperature make a big difference in the time it takes the beer to start?

I'm thinking about putting a heater in the water bath and bumping it up a couple of degrees.


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Old 01-22-2012, 05:26 PM   #2
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No doubt it does. I normally go warmer and cool it as it starts to takeoff.
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Old 01-22-2012, 05:34 PM   #3
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In my experience with pacman it takes forever to get going. I just pitched a active 2L starter in an IPA and it took over 24 hours before I saw any activity. The starter took 3 days to become very active, and this was from a fresh swollen smack pack. Far from my favotite yeast.
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Just buy a small swimming pool, throw everything in and mash it. Then open ferment in another swimming pool with all the yeast.
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Old 01-22-2012, 08:30 PM   #4
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26 hours and no sign of life. I've put the heater in the water bath to get it up a few degrees.


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