Author Topic: Pressure Kills Yeast?  (Read 802 times)

Offline davidgzach

  • Senior Brewmaster
  • ******
  • Posts: 1659
    • View Profile
Pressure Kills Yeast?
« on: December 14, 2012, 06:45:24 AM »
I saved some WLP037 slurry for an Irish Ale I was planning to make next week.  I forgot to release the pressure and when I checked on it yesterday the container was pretty swelled.  I released the pressure and put it back.  It was saved from two batches of Brown Ale so there was a good amount of yeast in there. 

Did I just kill them all by death by pressure? 

Dave
Dave Zach

Offline Slowbrew

  • Brewmaster General
  • *******
  • Posts: 2031
  • The Slowly Losing IT Brewery in Urbandale, IA
    • View Profile
Re: Pressure Kills Yeast?
« Reply #1 on: December 14, 2012, 08:42:11 AM »
Your yeast should be fine.  Make a starter to rouse it and you'll be good to go. 

As far as I know (which isn't much) the yeast shouldn't be able to produce enough pressure actually kill themselves.

Paul
Where the heck are we going?  And what's with this hand basket?

Offline redbeerman

  • Senior Brewmaster
  • ******
  • Posts: 1810
  • On the banks of the mighty Susquehanna in MD
    • View Profile
Re: Pressure Kills Yeast?
« Reply #2 on: December 14, 2012, 08:52:38 AM »
Your yeast should be fine.  Make a starter to rouse it and you'll be good to go. 

As far as I know (which isn't much) the yeast shouldn't be able to produce enough pressure actually kill themselves.

Paul

Making a starter or at least taking a sample and making a small starter to check the viability of the yeast is a good idea.
CH3CH2OH - Without it, life itself would be impossible.

[441, 112.1deg] AR

Jim

Offline kramerog

  • Senior Brewmaster
  • ******
  • Posts: 1144
    • View Profile
Re: Pressure Kills Yeast?
« Reply #3 on: December 14, 2012, 09:09:00 AM »
I saved some WLP037 slurry for an Irish Ale I was planning to make next week.  I forgot to release the pressure and when I checked on it yesterday the container was pretty swelled.  I released the pressure and put it back.  It was saved from two batches of Brown Ale so there was a good amount of yeast in there. 

Did I just kill them all by death by pressure? 

Dave

Pressure can kill yeast, but not the pressures that brewers encounter.
Brewers of South Suburbia
Brixie's Brewers
Oak Park Homebrewers