Ss Brewtech’s Biggest Baddest Holiday Giveaway Ever!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Sierra Nevada Yeast Harvest
Thread Tools
Old 12-19-2011, 07:32 PM   #1
Vendor Ads 
Feedback Score: 0 reviews
Join Date: Feb 2010
Location: Fort Worth, Texas
Posts: 34
Liked 1 Times on 1 Posts
Likes Given: 4

Default Sierra Nevada Yeast Harvest

I'm trying to get a yeast harvest from a Sierra Nevada Pale Ale. This is my first time attempting something like this.

I boiled about 1/3 cup LME in a pint of water, let it cool to room temperature Sanitized a quart mason jar and added the wort, then drained the bottom sludge from 3 bottles of the PA. I covered the jar with plastic wrap and let it sit at room temperature. The original "head" on top of the wort went away after a couple days, then a small layer of white bubbles showed up on top of the wort.

It's been sitting at about 68 degrees for 6 days or so.

So my question is: now what? Am I right so far? How do I tell if this is any good? Am I going to be dumping a cesspool of bacteria into my full batch? I didn't get an OG reading, but can probably get a calculated estimation. I've heard the term "decant" with this process, how much should I be pouring off the top?


Ruprect is offline
Reply With Quote
Old 12-19-2011, 07:44 PM   #2
Feedback Score: 0 reviews
Join Date: Sep 2011
Location: Durham, NC
Posts: 431
Liked 16 Times on 14 Posts


Before you decant, you need to chill it overnight to get the yeast to settle. I'm assuming you're not using a stir plate, do you have a pile of yeast sediment growing at the bottom? Sometimes it's just a leap of faith, but you can usually tell if it's any good or not by the smell. Anything nasty will smell nasty.

Your process seems solid, and this process can take a while depending on the age of the bottles. You should be able to see a buildup of yeast sediment if they're growing.

PoppinCaps is offline
Reply With Quote
Old 12-19-2011, 07:54 PM   #3
Feedback Score: 0 reviews
EO74's Avatar
Join Date: Sep 2009
Location: rockland mass
Posts: 357
Liked 12 Times on 12 Posts
Likes Given: 4


You may also need to step it up a little to get a bigger starter culture, i've be wanting to do this for a while but i was going to try it with pacman yeast! The other thing to consider is some breweries use lager yeast to bottle condition but i think your alright with sierra pale ale! Post to let us know how it goes.
EO74 is offline
Reply With Quote
Old 12-19-2011, 07:57 PM   #4
Feedback Score: 4 reviews
Join Date: May 2009
Location: Los Angeles
Posts: 8,003
Liked 451 Times on 367 Posts
Likes Given: 65


The Sierra Nevada yeast in the pale ale is US-05, WLP001, Wyeast 1056.
weirdboy is online now
Reply With Quote
Old 12-19-2011, 08:13 PM   #5
Feedback Score: 0 reviews
Join Date: May 2011
Location: Waynesboro, PA
Posts: 545
Liked 11 Times on 11 Posts
Likes Given: 3


What you have described above it the general process however there are a couple of different ways. I like to plate the yeast out of a bottle and isolate a single colony with the idea that I can spot any bacteria to avoid the cesspool situation.

As a side note SNPA uses WLP001/WY1056/US05 so although it is a good practice the yeast you capture can be easily purchased.

There is a list floating on this forum of what people how found yeast in what beer.



Clementine is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
So I attempted to culture Sierra Nevada Kellerweis yeast... H2S city greenbirds Fermentation & Yeast 15 06-06-2014 12:20 PM
Sierra Nevada Ovila yeast njbabs Fermentation & Yeast 6 06-28-2012 09:03 PM
Sierra Nevada Ovila Saison yeast = Kellerweis yeast? Bsquared Fermentation & Yeast 5 12-06-2011 01:36 AM
Culturing yeast from a Sierra Nevada Torpedo IPA bottle ipatch Fermentation & Yeast 10 08-27-2010 10:54 PM
Sierra Nevada yeast culture jaketothemax1000 Fermentation & Yeast 4 11-22-2009 09:47 PM

Forum Jump

Newest Threads