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Old 08-16-2014, 10:10 AM   #1
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Default Oldest vial used to make a starter?

Whats the oldest vial you've used to make a starter? I've built starters off out of date ones before but, i have a particularly old one in the fridge at the mo and am wondering what are the chances of reviving it?

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Old 08-16-2014, 10:17 AM   #2
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The oldest I've used so far was 6 months old, WLP007 on a double ipa and that turned out successful. I've heard of people doing over a year old. Just make a small lower gravity starter (about 1.020) and step it up. How old is your vial?

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Old 08-16-2014, 11:39 AM   #3
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My lhbs had a large box of out of date vials from White Labs and said I could take what I wanted. Some wouldn't kick off at all, but some were a year out of date and they worked great.

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Old 08-16-2014, 11:52 AM   #4
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A couple weeks ago I tried to revive two vials of Chico that were 2+ years old. Pitched into a 1.050 starter they showed very little signs of life after two days and were dumped out.

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Old 08-16-2014, 02:01 PM   #5
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3.5 year old slant of WLP029. 250mL starter stepped up to 2L after a few days. Pitched and all went well.

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Old 08-16-2014, 02:23 PM   #6
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Two year old Wyeast American Lager yeast. Took a week and a half to wake it up and step it but it made a tasty summer lager.

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Old 08-16-2014, 02:27 PM   #7
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Quote:
Originally Posted by Fedora View Post
A couple weeks ago I tried to revive two vials of Chico that were 2+ years old. Pitched into a 1.050 starter they showed very little signs of life after two days and were dumped out.

If you try this again do a step starter with the first step being about 250 ml of 1.020 - 1.025 wort.

1.050 is high even for a normal starter with a brand new vial!
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Old 08-16-2014, 03:11 PM   #8
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Cheers for responses. I had a vial of wlp833 that was sitting in the fridge about 8 months beyond expiry. It's been on the stir plate for over 24 hours now and not a budge thus far. I made a 1.040 starter. I'd be amazed if i got nothing at all

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Old 08-16-2014, 08:37 PM   #9
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It will go eventually. That is why Wyeast packs are better. You pop it in a sterile environment and it's like a small starter step, then it may take a few days to swell before making an actual starter. I am using 18 month old Wyeast pack on my next lager, 2 steps (pop and then 2L starter over the course of 1.5 weeks).

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Old 08-17-2014, 11:27 AM   #10
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never used wyeast, what yer sayin makes sense though. Took off in the end bout 12 am last night. Lower viability => longer lag phase. Great that the product can be stored for that long!

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