Stuck fermentation

Discussion in 'General Beer Brewing Discussion' started by pottsworth, Jun 12, 2019 at 9:00 PM.

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  1. Jun 12, 2019 at 9:00 PM #1

    pottsworth

    pottsworth

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    I seem to have got my first stuck fermentation.

    I was aiming for a stone ipa clone, and hit 1.060 og, but totally forgot to chill my starter wort, and dumped yeast straight into a near boiling starter. I ditched that and chucked in a (with hindsight quite old) pack of us-05.

    Fermentation never really got going, so after a few days I did a vitality starter of cml haze and chucked that in, but that didn’t really take off either.

    I slowly ramped up to 23 degrees, but a refeactometer reading tonight still showed just under 1.030 (graph below is 10 points out as I need to recalibrate it).

    Any suggestions before I just keg it, taste it, then probably dump the lot!?
     
  2. Jun 12, 2019 at 9:54 PM #2

    RichardM

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    Make another starter and add it now
    or
    Give it a good stir and wait and see what happens
     
  3. Jun 12, 2019 at 10:01 PM #3

    MyQul

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    You try chucking in some amylase enzme to crank the gravity down
     
  4. Jun 13, 2019 at 6:05 AM #4

    pottsworth

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    I’ve never used amylase before.

    How much do you need and how long does it take?

    Can you just chuck it straight into the fermenter?
     
  5. Jun 13, 2019 at 8:38 AM #5

    MyQul

    MyQul

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    You need 1 tsp per 23L brew. I believe it takes about 1-2 weeks. I've never used it either. But I will be putting it in my latest brew to get the FG down to 1.000 (it currently stands at 1.007)
     
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  6. Jun 13, 2019 at 11:14 AM #6

    terrym

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  7. Jun 13, 2019 at 11:27 AM #7

    Lawrence22

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    Just a thought did you adjust your refractometer reading for alcohol content. A reading of 1.030 for a brew that started at 1.060 would suggest a true reading of 1.013.
     
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  8. Jun 13, 2019 at 10:17 PM #8

    pottsworth

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    [​IMG]

    No, no I did not.

    Now you say it I can't believe I did that!

    I'll keg it tomorrow and take a proper hydrometer reading. If it gets drunk it gets drunk.
     
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