Keg Connection New Inline Flow Control Valve Giveaway

Home Brew Forums > Home Brewing Community > General Chit Chat > How long does liquid yeast stay viable for use?
Thread Tools
Old 11-03-2012, 07:27 PM   #1
Feedback Score: 0 reviews
Join Date: Jan 2012
Location: Sheboygan, Wisconsin
Posts: 11
Default How long does liquid yeast stay viable for use?

Have vial of White Labs Belgian liquid ale yeast WLP550, been in refrig since delivered Jun-06-12, "best before date" reads Sep-04-12. Is this date "bible"? I'd like to brew tomorrow but if this yeast shouldn't be used I'm SOL cuz brew store isn't open til Monday. Any input would be greatly appreciated...

Phipcice is offline
Reply With Quote
Old 11-03-2012, 07:36 PM   #2
Feedback Score: 0 reviews
kh54s10's Avatar
Join Date: Aug 2011
Location: Tiverton, Rhode Island
Posts: 8,778
Liked 1057 Times on 881 Posts
Likes Given: 256


The actual manufacturing date is 4 months prior to the best by date. If you are making a 5 gallon batch you should have already made a starter. The older the yeast the larger it needs to be.

If it were me I would make a starter and put off brew day until it is ready. and are good sources of information on starters and have calculators to determine how much yeast you will need.
kh54s10 is online now
Reply With Quote
Old 11-03-2012, 07:43 PM   #3
Feedback Score: 1 reviews
Golddiggie's Avatar
Join Date: Dec 2010
Location: Between here and there, and everywhere
Posts: 12,062
Liked 483 Times on 423 Posts
Likes Given: 266


I had some White Labs vials in the fridge, that was dated for use by March 2012, that I used this past weekend. I made three starter steps to get the cell count where I needed. After pitching the slurry, I had full activity in under 12 hours (going through the blowoff assembly)...

With a starter, or a couple of starter steps, you can use rather old yeast.
Hopping Tango Brewery

跟猴子比丟屎 ・ Gun HOE-tze bee DIO-se

On Tap: Caramel Ale, Mocha Porter II, MO SMaSH IPA
Waiting/Carbonating: 12.5% Wee Honey II, 8.9% Old Ale, English Brown Ale, Lickah ESB, Mocha Porter II
K2: Epic mead
K3: TripSix
On Deck: Caramel Ale
Mead [bottled]:Oaked Wildflower Traditional, Mocha Madness, Blackberry Melomel, maple wine
Golddiggie is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
how long will a starter stay viable? OHIOSTEVE Beginners Beer Brewing Forum 3 01-18-2011 02:25 AM
How long will a yeast starter stay viable? southpawbrew Fermentation & Yeast 4 02-16-2010 01:45 AM
How long will 1step stay viable SkyDog Beginners Beer Brewing Forum 2 02-16-2008 06:29 PM
How long does slurry stay viable? Bobby_M General Techniques 8 09-08-2007 01:49 AM
How long does One-Step stay viable? Focus Equipment/Sanitation 7 01-17-2007 06:58 PM

Forum Jump

Newest Threads