Harvesting yeast from Primary - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Harvesting yeast from Primary

Reply
 
Thread Tools
Old 11-17-2009, 05:43 PM   #1
CalmYourself
Recipes 
 
Dec 2008
Johannesburg, south africa
Posts: 94


Reading this thread has got me thinking...

Is it possible to harvest yeast directly from Primary?

By that I mean:
  1. Take about a bottle's worth (call it 450ml) of beer from primary just after the majority of fermentation is complete
  2. Seal the bottle (cap it)
  3. Stick it in the fridge for 3 - 4 weeks until next brew
  4. Create a starter with some DME + the bottled harvest

Would this be ok for re-using yeast in future batches?

I'm thinking of taking the harvest roughly 1 week into primary. I usually leave the beer in primary for just shy of a month.
__________________

Primary: Nothing
On Tap: Cream of 3 Crops Ale

http://nochillbrews.blogspot.com/

 
Reply With Quote
Old 11-17-2009, 05:55 PM   #2
Dos_Locos_Brewery
Recipes 
 
Mar 2009
Allentown, PA
Posts: 178
Liked 2 Times on 2 Posts


This would work, but I'd worry about capping a bottle of actively fermenting beer, even though it's going in the fridge. I think a better approach would be: after racking off the yeast/dregs from the primary, just pour some slurry into a sanitized jar. I like honey jars for this, because they have a wide mouth. Put some saran wrap over the top & screw on the lid. This is not airtight enough to explode the jar, but it's sealed well enough for your purposes. Go ahead and keep it for 4 weeks - it will wake up just fine. Doing an acid yeast wash is the preferred method, but if you just want to get one more batch from it, and your primary was infection free, this will work.

 
Reply With Quote
Old 11-17-2009, 05:59 PM   #3
CalmYourself
Recipes 
 
Dec 2008
Johannesburg, south africa
Posts: 94

Thanks!

I have a jar sitting around that I'm going to do just that to! Going ot boil the jar and lid first though.
__________________

Primary: Nothing
On Tap: Cream of 3 Crops Ale

http://nochillbrews.blogspot.com/

 
Reply With Quote
Old 11-17-2009, 07:42 PM   #4
khiddy
 
khiddy's Avatar
Recipes 
 
Apr 2009
Portland, OR
Posts: 1,203
Liked 5 Times on 5 Posts


You could also just sanitize the jar and lid in StarSan or Iodophor. No need to boil (same effect as sanitizer).
__________________
Beeritas Vos Liberabit Brewing
Primaries: BEER Beer (4/8/12); Fisher-Price My First Mead (12/20/10)
Kegged: Hairy Patersbier (1/28/12); Dick Beer (2/15/12); Get Yer Goat Maibock (2/22/12)
Bottled: Ye Olde Tyme Holiday Ale (9/26/10); Dick Beer (2/15/12); Candy's Dad's Homebrew (2/27/12)
Apfelweins: Crapfelwein (4/4/12); Apfelweinlager 34/70 (2/26/12)
Kit Wines: Fisher-Price My First Amarone (4/1/12); Rosso Magnifico (4/17/12)
On Deck: Albertus Magnus DIPA

 
Reply With Quote
Old 11-17-2009, 07:44 PM   #5

Quote:
Originally Posted by khiddy View Post
You could also just sanitize the jar and lid in StarSan or Iodophor. No need to boil (same effect as sanitizer).
Because you're dealing with such a small cell count of yeast and the possibility of contamination, I'd boil both the jar and the lid to sterilize.

 
Reply With Quote
Old 11-17-2009, 08:55 PM   #6
Dos_Locos_Brewery
Recipes 
 
Mar 2009
Allentown, PA
Posts: 178
Liked 2 Times on 2 Posts


Quote:
Originally Posted by flyangler18 View Post
Because you're dealing with such a small cell count of yeast and the possibility of contamination, I'd boil both the jar and the lid to sterilize.
But the point is that a huge cell count is harvested. I'd tend to agree with Khiddy that sanitizing is enough (that's how I've done it), but there's certainly no harm in boiling...

 
Reply With Quote
Old 11-17-2009, 11:27 PM   #7
kanzimonson
Recipes 
 
Aug 2009
Charlottesville, VA
Posts: 2,174
Liked 44 Times on 40 Posts


I think it's better to actually rinse the yeast, commonly called "washing yeast." This will get them in a solution with a minimal amount of nutrients and oxygen, thereby discouraging any metabolic activity on their part. They'll hibernate more readily, and when reawakened will be in better health than just straight up saving slurry.

Read the sticky about washing yeast, and listen to every Brew Strong episode about repitching and washing yeast. Trust me, these procedures sound so much harder than they are. Just listen to everyone else's procedures, then look at what equipment you have and make a plan of action. You'll be really excited and proud about the step your homebrewing is taking when you have 3 or 4 bottles of cultured yeast in your fridge.

I use swing-top bottles to store harvested yeast. Once I get 'em in the bottle, I pop the top once after two days of storage to release any pressure in case the yeast were up to something. You don't even have to really open the bottle - just crack it open to release a tiny amount of gas.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yeast washing vs. yeast harvesting (kraeusen skimming) Dogslovebeer General Techniques 14 05-30-2013 06:05 PM
Harvesting Yeast From the Primary SkiSoloII Recipes/Ingredients 2 02-23-2009 08:37 PM
Harvesting Yeast from primary schneemann Beginners Beer Brewing Forum 10 08-22-2008 06:49 PM
Harvesting Yeast from "Unfiltered" Primary Evan! General Techniques 6 12-15-2006 02:27 PM
Yeast harvesting: better out of primary or secondary BrewStef General Techniques 3 09-26-2006 10:28 PM


Forum Jump