Old Yeast Starter

Discussion in 'Homebrewing' started by jageraholic, Nov 1, 2017.

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  1. jageraholic

    jageraholic Pooh-Bah (1,632) Sep 16, 2009 Massachusetts
    Pooh-Bah Trader

    I made a yeast starter in January and life got in the way and I didn't get around to making the beer. The starter has been in my fridge since. Is the yeast salvageable and will it still make the beer intended if I dump out and make starters again? Its a strong belgian yeast and I was planning on making a Belgian Quad, lots of ingredients, lots of time and want to make sure I won't be waiting months for a beer that never had a chance due to old ingredients.
     
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  2. TooHopTooHandle

    TooHopTooHandle Initiate (0) Dec 20, 2016 New York

    How was the yeast stored in the fridge? Was in it in a sterilized/sanitized container? If it was stored properly you can definitely reuse it. Just make sure you use a yeast calculator to determine how many viable cells are left. If you have any doubt that the yeast was stored improperly just buy a new package not worth taking the chance over $7-$10.

    If you do reuse it I would recommend decanting off the liquid and making a new starter from that yeast because after all that time there most likely will not be enough cells to pitch. Just make sure you calculate how many cells you need to pitch then you will know what size starter you need to make :slight_smile:
     
  3. Prep8611

    Prep8611 Savant (1,208) Aug 22, 2014 New Jersey

    Ya decant and make a new starter.
     
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  4. jageraholic

    jageraholic Pooh-Bah (1,632) Sep 16, 2009 Massachusetts
    Pooh-Bah Trader

    It's stored in the sanitized growler that i made the starter in with a grolsch style top.
     
  5. jageraholic

    jageraholic Pooh-Bah (1,632) Sep 16, 2009 Massachusetts
    Pooh-Bah Trader

    Definitely plan on making another yeast starter if its still usable. Just wanted opinions on if this yeast will still make a good belgian quad.
     
  6. Prep8611

    Prep8611 Savant (1,208) Aug 22, 2014 New Jersey

    I think so but if the starter picks up just fine than I'd say you are okay. Like the other guy said I'd make sure you calculate how many cells u have.
     
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  7. Supergenious

    Supergenious Maven (1,273) May 9, 2011 Michigan

    More than likely it’s salvagable. But probably not ideal to use for a monster beer like a Belgian Quad. You’re going to want a nice healthy pitch of yeast for something like that. Up to you though, best of luck.
     
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  8. EvenMoreJesus

    EvenMoreJesus Initiate (0) Jun 8, 2017 Pennsylvania

    ^^^ These things.

    He can always step it up to a bigger volume beforehand, but as long as it's active 2 - 4 pints is plenty for 5 gallons.
     
  9. Prep8611

    Prep8611 Savant (1,208) Aug 22, 2014 New Jersey

    ya agreed on the yeast being active. That's why I try to get some starter wort for my slurry before I pitch the next day.
     
  10. PortLargo

    PortLargo Pooh-Bah (1,831) Oct 19, 2012 Florida
    Pooh-Bah

    It's possible the yeast has a trace of life left that can be re-started. But consider a few constraints working against you: 1. My guess is you don't really know how many active cells you had back in January. Let's say you had 100 billion (a guess). Ten months later that would leave you with less than 10 billion. 2. A Belgian Quad will have an OG above 1.075, which means you'll need 300+ billion cells. 3. Expect at least a 3-step starter to arrive at this number and close to a pound of DME (@ $4/lb) . . . but you'll save almost 3 bucks over buying a new packet.

    If I wanted to make sure I wasn't wasting my time on a large/time-consuming beer my choice would be new yeast and a simple one-step starter , , , would forego trying to save less than the price of a Bud Light in a bar.
     
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  11. Prep8611

    Prep8611 Savant (1,208) Aug 22, 2014 New Jersey

    Ya after the breakdown I agree. Buy some new yeast and build a new starter. Or build your original yeast up with a starter to brew a small Belgian like 1.040 then use that yeast cake slurry for your quad.
     
  12. jageraholic

    jageraholic Pooh-Bah (1,632) Sep 16, 2009 Massachusetts
    Pooh-Bah Trader

    Thanks guys. Solid arguments. It's why I've haven't made the beer yet. Cheers!
     
  13. JohnnyChicago

    JohnnyChicago Initiate (0) Sep 3, 2010 Illinois

    It’s been almost a year. Plus however long the smack pack sat on the homebrew shop shelf. You are reaching the point where the viability is low enough that it’s probabaly financially more efficient to just buy a new smack pack. If you are making a beer like duvel, you don’t want to gamble on yeast health. That beer finishes looow.
     
  14. pweis909

    pweis909 Grand Pooh-Bah (3,250) Aug 13, 2005 Wisconsin
    Pooh-Bah

    I've never had a starter fail. When I have had old yeast I've made step up starters. I never tried to revive a 10 month old starter, but I feel pretty good about your odds. If your intention is to push the limits and see what you can do with old yeast, go for it; you'll make beer. It may throw some weird flavors or finish high, or may be close to exactly what you want. If your intention is to make that consistently great best-of-show contender that you used to always make, better to not use yeast of questionable viability.
     
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