Ss Brewing Technologies Giveaway!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Yeast culture method?
Reply
 
LinkBack Thread Tools
Old 10-08-2009, 06:01 PM   #1
jldc
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
jldc's Avatar
Recipes 
 
Join Date: Nov 2008
Posts: 662
Liked 6 Times on 6 Posts

Default Yeast culture method?

Instead of yeast washing after primary fermentation in a carboy, how about this?

I usually make a 2l starter in a 4l flask. Then I chill overnight, decant the liquid and pitch the slurry.

What if I make a 3l starter and prior to chilling, pour a quart of the well-mixed (stirplate) starter into a sterilized mason jar and put that in the fridge. The remaining starter is chilled, decanted, and pitched like usual. The mason jar can be pitched (after decanting) into my next 3l starter.

Now I don't have to wash the yeast or collect it from a carboy.

__________________
jldc is offline
 
Reply With Quote Quick reply to this message
Old 10-08-2009, 06:58 PM   #2
Suthrncomfrt1884
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2009
Location: Rockford, Illinois
Posts: 4,079
Liked 23 Times on 22 Posts
Likes Given: 3

Default

This is how I culture my yeast bank. Everytime I make a starter, I take about 8- 15mL vials of yeast slurry and mix it with an freeze protection liquid. This helps preserve the yeast, and it's better than washing.

__________________
He who drinks beer sleeps well. He who sleeps well cannot sin. He who does not sin goes to heaven.

Another HERMS rig...
Suthrncomfrt1884 is offline
 
Reply With Quote Quick reply to this message
Old 10-08-2009, 07:06 PM   #3
Bsquared
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Bsquared's Avatar
Recipes 
 
Join Date: Oct 2006
Location: San Diego
Posts: 1,811
Liked 55 Times on 51 Posts
Likes Given: 22

Default

I think that would work fine.

But one of the reasons for pitching from the slurry of a fermented batch it that you are selecting for the best yeast for your beer/process/water. So you would lose this benefit If you do it the way you are suggesting, you would be selecting for the yeast that does best in your starter not the beer. But if you have a yeast that is working really well for you you can do this to maintain that yeast.

I think a lot of breweries have yeast banks at places like white lab, that they have grow up big slurries that are periodically shipped to them, but for day to day use they are pulling yeast off their fermenters.

__________________
Bsquared is offline
 
Reply With Quote Quick reply to this message
Old 10-08-2009, 08:32 PM   #4
Saccharomyces
Be good to your yeast...
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
Saccharomyces's Avatar
Recipes 
 
Join Date: Jun 2008
Location: Pflugerville, Texas
Posts: 5,444
Liked 80 Times on 52 Posts
Likes Given: 2

Default

Yep this works fine as long as you can re-pitch within a month or so. If it goes longer you should wash the yeast before pitching it into a starter so you don't end up with autolyzed yeast in your brew. I would use this method if I didn't use so many freakin' different yeast strains...

Doing what you are suggesting, the yeast growth that occurs with each subsequent re-pitch is less than re-pitching yeast, and presumably sanitiation is tighter as well since you only have a flask and not your whole end to end brew system to contaminate the yeast. This allows you to count each subsequent starter re-pitch as 1/2 generation rather than a full generation when considering how long to keep re-using the yeast.

__________________
[How to Calculate Mash Efficiency | Do I Need a Yeast Starter? | My Ghetto Fermentation Chamber | Twitter | 6 Gal. HDPE Fermenters | Slanting Yeast | No Sparge Brewing]

Quote:
Originally Posted by Soperbrew
big brother only monitors facebook and untappd
Saccharomyces is offline
 
Reply With Quote Quick reply to this message
Reply



Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yeast culture question? Scuba General Beer Discussion 1 05-20-2009 01:02 PM
Have a yeast culture, now what? Hugh_Jass General Techniques 7 04-08-2009 02:20 PM
Westvleteren 12 Yeast Culture Nyxator Recipes/Ingredients 3 11-17-2008 07:10 PM
How to keep a yeast culture prey Recipes/Ingredients 3 07-11-2006 01:07 AM
Yeast Culture CheaperPlease General Techniques 17 07-07-2006 09:20 PM