Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Using harvested yeast
Reply
 
LinkBack Thread Tools
Old 04-11-2013, 02:43 AM   #1
zero_gabe
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2013
Posts: 74
Liked 5 Times on 4 Posts

Default Using harvested yeast

Im planning on harvesting and washing my yeast from my current brew. My question is once I have my jars of washed yeast, how do I know how much of that yeast to pitch for my next brew? Do i throw it all in or do i have to measure it some how? Any and all input greatly appreciated!

__________________
zero_gabe is offline
 
Reply With Quote Quick reply to this message
Old 04-11-2013, 03:08 AM   #2
bigmunchez
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2012
Location: Perth, Western Australia
Posts: 12
Liked 1 Times on 1 Posts
Likes Given: 4

Default

Check out mrmalty.com under yeast tools. Select the 'repitching from slurry' tab. You can enter the gravity and volume of your planned beer along with the harvest date of your yeast and it will calculate the volume of slurry required. There are other calculators out there too, but I haven't tried them.
As a (very) rough guide, if you're repitching within a couple of days into a similar beer to the one you harvested from you'll need about a quarter of the yeast produced from the first beer.

__________________
bigmunchez is offline
 
Reply With Quote Quick reply to this message
Old 04-11-2013, 03:21 AM   #3
acidrain
Feedback Score: 3 reviews
Recipes 
 
Join Date: Jul 2012
Location: Seattle, Washington
Posts: 1,654
Liked 129 Times on 112 Posts
Likes Given: 27

Default

Mr. Malty says 4.5 billion cells per ml of dense slurry.
I figure 50% = 2.25 billion / ml (if it's been sitting in the fridge awhile), and even round that down to 2, so if I need 100 B cells, I pitch 50 ml of dense slurry.

__________________

Keg #1: RHESB 6.2
Keg #2: Cascadian Stout
Keg #3: BMC West
Fermenter #1 Bourbon/Oak Vanilla Porter
Bottled: Mjolnir Mead, Lazy Daze Hefe, The Bollocks ESB, Dark Matter stout.

acidrain is offline
 
Reply With Quote Quick reply to this message
Old 04-11-2013, 03:59 AM   #4
TANSTAAFB
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: San Luis Valley, CO
Posts: 1,761
Liked 113 Times on 91 Posts
Likes Given: 12

Default

I have washed yeast for a couple of years now and I always make a starter. I have pitched slurry directly from one fermentation to the next without washing and used Mr. Malty numbers to measure it out. You can save unwashed slurry in the fridge for about a week if you don't have a fresh batch to pitch right into. If it will be more than a week make a starter to build up one jar of your washed yeast.

__________________
Quote:
Originally Posted by Mirilis View Post
"I cant handle that buddy.. it tastes like Moose Piss", (IPA) - side note.. ive never had moose piss, but im sure it doesnt taste like IPA or I would have a moose.
Bottled: Grizzly Saison, Grizzly Brett, Session Pale, Colorado Cream Ale, Cranberry Apfelwein
Primary: -37* Blue Balls Baltic Porter, Bad Dog Brown, Bohemian Pilsner
Secondary: Rarely!!!
Future: Cognitive Dissonance Cascadian Dark Ale
TANSTAAFB is offline
jack181 Likes This 
Reply With Quote Quick reply to this message
Old 04-11-2013, 04:06 AM   #5
zero_gabe
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2013
Posts: 74
Liked 5 Times on 4 Posts

Default

Thanks guys for your replies, i do appreciate it. Sorry for the rookie questions, i really want to make sure i do this right. So is it necessary to wash slurry? When saving yeast, how many times should I let the yeast set and collect before i do my final collection. Also how much liquid shod be in with the yeast compared to the amiunt of yeast?

__________________
zero_gabe is offline
 
Reply With Quote Quick reply to this message
Old 04-11-2013, 04:17 AM   #6
TANSTAAFB
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2010
Location: San Luis Valley, CO
Posts: 1,761
Liked 113 Times on 91 Posts
Likes Given: 12

Default

You do not have to wash if you are going to pitch from one batch immediately (or soon) into another. You can scoop from your bucket with a sanitized spoon into a sanitized container (like a small Pyrex measuring cup or a Mason jar) and cover with sanitized foil and keep it in the fridge. If you wash then follow the yeast washing sticky here on HBT. The latest Chop & Brew episode (3?) on you tube (glad to have you back Chip!) actually has a really good video demonstration from a reputable source.

__________________
Quote:
Originally Posted by Mirilis View Post
"I cant handle that buddy.. it tastes like Moose Piss", (IPA) - side note.. ive never had moose piss, but im sure it doesnt taste like IPA or I would have a moose.
Bottled: Grizzly Saison, Grizzly Brett, Session Pale, Colorado Cream Ale, Cranberry Apfelwein
Primary: -37* Blue Balls Baltic Porter, Bad Dog Brown, Bohemian Pilsner
Secondary: Rarely!!!
Future: Cognitive Dissonance Cascadian Dark Ale
TANSTAAFB 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
How Much Harvested Yeast To Use coldrice Fermentation & Yeast 3 06-10-2012 03:12 PM
Mocktoberfest (marzen)- should i make a yeast starter with harvested yeast? mhayden37 Fermentation & Yeast 12 02-22-2012 01:24 PM
Have I got enough harvested yeast? el_caro Fermentation & Yeast 22 02-20-2011 12:24 AM
Yay or Nay? Could the yeast be harvested from... Mischief_Brewing Fermentation & Yeast 2 03-12-2010 09:08 PM
Yeast harvested from a beer yeast cake used for Apfelwein? Chello General Techniques 3 02-06-2008 09:01 PM