Spike Brewing Giveaway - New v3 Kettle

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Expired WLP550
Thread Tools
Old 07-05-2011, 10:23 PM   #1
Feedback Score: 0 reviews
Join Date: Sep 2010
Location: NC, NC
Posts: 63
Default Expired WLP550

Just a note regarding expired yeast. I had some WLP550 that Expired on Feb-11. I was getting a little concerned since I've never gone that far past the expiration date. On July 3 I decided to use it in a 5 gallon batch. I made a 1.2 liter starter. I planned to wait longer than my normal 24 hours before cold crashing the starter, but I had something come up. I couldn't wait. At 24 hours the starter was showing slight signs of activity, though not as much as I would anticipate from fresh yeast.

After cold crashing and decanting most of the liquid, I pitched the yeast. I expected some lag. However, after 8 hours fermentation is going strong. So nearly 5 months past expiration -- with a normal starter -- things look good. The beer OG was 1.056. I'll post the FG in a couple of weeks.

Finally, I made several slants from the expired yeast. Even the slants are showing strong yeast growth after 48 hours.

ChickenHops is offline
Reply With Quote
Old 07-05-2011, 11:42 PM   #2
Feedback Score: 0 reviews
Join Date: Sep 2008
Location: Visalia, CA
Posts: 4,080
Liked 121 Times on 99 Posts
Likes Given: 79


Good post, thanks for sharing.
"Good people drink good beer." -HST
bigbeergeek is offline
Reply With Quote
Old 07-06-2011, 06:43 PM   #3
Feedback Score: 0 reviews
Join Date: Apr 2009
Location: , Texas
Posts: 1,261
Liked 25 Times on 23 Posts
Likes Given: 12


Claudiusb, (a member on this forum) is stepping up a yeast from 2005 or 2006. This thing has been expired for years. I just spoke with him and he said it smelled different than that yeast usually does, but I guess we will see what happens. It is defiantly alive and kicking!
GodsStepBrother is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Expired yeast? shamrockdoc Fermentation & Yeast 2 11-01-2010 03:19 PM
Dry yeast - How expired is too expired? MorningGloryBrew Fermentation & Yeast 14 07-25-2010 12:47 PM
WLP550 fastest krausen Pivzavod Fermentation & Yeast 2 06-01-2010 08:33 PM
WLP550 (Belgian Ale Yeast) Max ABV %? MellowToad Fermentation & Yeast 2 05-08-2010 04:12 AM
wlp550 temps lpdb185 Fermentation & Yeast 3 05-03-2010 12:36 AM

Forum Jump