Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > T-58 best before date
Reply
 
LinkBack Thread Tools
Old 02-16-2013, 02:39 AM   #1
SudsyPaul
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2012
Location: Ottawa, Ontario
Posts: 353
Liked 47 Times on 35 Posts
Likes Given: 9

Default T-58 best before date

So I'm an idiot and I just picked up any packet from LHBS, and I just noticed that the expiration date on the packet is 05-2012

This is almost a YEAR overdue... wtf?

Is this still safe/ok to use?

I'm going to call them and ream them out, tomorrow morning... but I'm 30min into my boil, so there's not much I can do, right now :|

__________________
SudsyPaul is offline
 
Reply With Quote Quick reply to this message
Old 02-17-2013, 08:48 PM   #2
nmfree
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Location: , Wisconsin
Posts: 55
Liked 12 Times on 8 Posts
Likes Given: 196

Default

Why wouldn't it be safe to use? It's not like the sterility of the packaging magically disappeared on June 1st of last year.

The only problem that you might run into is underpitching, since yeast viability decreases over time, but I wouldn't worry about even that.

__________________

Home of the world's first Yoctobrewery- brewing beer one sip at a time.

nmfree is offline
 
Reply With Quote Quick reply to this message
Old 02-18-2013, 12:24 AM   #3
Calder
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2010
Location: Ohio
Posts: 5,532
Liked 255 Times on 228 Posts
Likes Given: 3

Default

Was the pack in the fridge at the LHBS? Did you store it in the fridge? If the answer to both questions is yes, then you are fine.

At room temperature dry yeast looses about 20% or more viability per year. I suspect the use by date s based on that and worked out to be about 50% of the cells to still be viable.

If stored in the fridge, dry yeast looses about 4% viability per year; so even after 10 years you will still have more than 50% viability.

If it was stored cool, you do not have a problem.

__________________
Calder 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
Out of date leewilliams88 General Beer Discussion 4 01-30-2012 07:48 AM
Anyone ever had date gin/date wine? TVarmy General Chit Chat 1 04-29-2010 01:02 PM
do you record date by brew date or bottling/kegging date? jigidyjim Beginners Beer Brewing Forum 15 01-03-2010 01:43 AM
Use-by date... KayaBrew General Beer Discussion 6 04-03-2009 03:03 PM