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Thread: Off-taste...sourness...more than one batch

  1. #1
    Join Date
    Sep 2007
    Posts
    124

    Off-taste...sourness...more than one batch

    We recently brewed two hefeweizens in our pilot brewing system. Both batches turned out sour....I would describe it as if we dumped lemon juice into the fermenter...also the end result was a bit darker and certainly as cloudy or cloudier then previous succesful batches within the same recipe. I can only think that the yeast had mutated or carried over an infection (from repitching yeast) that formed in the second to last batch....also infecting the latest batch. We used WB-06 dry yeast that we've had for about 9 months, kept in refridgeration in it's original packaging however opened and used a portion thereof previously. I do not think it's an equipment sanitation issue since the off-taste seems to be isolated to these two batches of hefeweizen brewed with our stash of WB-06

    Anyone have any thoughts as to what's the most likely cause of this?

  2. #2
    Join Date
    Jan 2008
    Location
    Fredericksburg, VA
    Posts
    341
    Wild yeast con produce a pronounced citrus character, although I generally have found it to be more like grapefruit than lemon.
    -Lyle C. Brown
    Brewer
    Camelot Brewing Co.

  3. #3
    Join Date
    Sep 2007
    Posts
    124
    Problem solved......we pitched fresh (dry) yeast in the next batch and it yielded the best hefeweizen we've ever tasted. We'll be pitching fresh yeast more often from now on.

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