Yeast washing 101

Discussion in 'General Brewing Discussions' started by cgp, Jan 24, 2014.

  1. cgp

    cgp New Member

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    Hi All
    I have recently been washing & re-using yeast within 7 days as that is the time limit specified in the Yeast book by Chris White & Jamil Zainasheff.
    However, the 101 article states that storage as mentioned is possible for many months!
    My Question is: After say 4 months of storage of 100mls of healthy washed yeast slurry,(100 billion cells), would the viability not have been affected by the same percentages as a vial of white labs liquid yeast? 16% viability, 16 billion cells.
    ie; 0.7% each day, 21% each month. Dead after 4.75 months. (143 days)
    I am now wondering if I should treat my 100mls of washed slurry this way.

    Regards
    Clip
     
  2. Ozarks Mountain Brew

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    all I can say is if it smells good and grows in a starter, no matter how long; use it, the slants I make will last 6 months with no care

    I do not ever use used yeast without first making a starter with it and making sure it starts foaming on top
     

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