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Old 08-11-2007, 06:00 AM   #1
Aug 2007
Posts: 13

I have a vial of San Francisco lager yeast that is 1 year out of date. I decided to make a starter for it about 12 hours ago and it is not bubbling yet. This is my first attempt at doing a starter is there any way of telling if the yeast is dead or is it to early to tell?

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Old 08-11-2007, 11:31 AM   #2
homebrewer_99's Avatar
Feb 2005
Atkinson (near the Quad Cities), IL
Posts: 17,796
Liked 136 Times on 102 Posts

Too early to tell.

A starter may take up to 3 days. With expired yeast you're supposed to add 1 day for every month past the expiration date.

I've started an expired yeast at over 1 year and it took 5 days for any activity.

This reason alone is one good reason for making starters prior to brewing...the wait.
HB Bill

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Old 08-11-2007, 06:24 PM   #3
Jun 2006
Ajax, Upper Canada (Toronto)
Posts: 470
Liked 1 Times on 1 Posts

Ya, I had a wyeast smack pack that was a year past the best before date....gave it a smack..nothing for 4 days, the it took off. I have used this yeast for 3 beers (recultured) this year.
As HB 99 said, give it at 4-5 days before giving up on it. I was about to throw it out - but then saw it sewlled a bit after 4 days ...then balloned after another 12 hrs.

Primary :
On Order: nothing at all..for a few months
Thinking about: Plisner malt and saaz hops

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