OG falling short

Discussion in 'Homebrewing' started by JeffTurner70, Sep 20, 2018.

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  1. dmtaylor

    dmtaylor Savant (1,149) Dec 30, 2003 Wisconsin

    BADA-BING!
     
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  2. GreenKrusty101

    GreenKrusty101 Initiate (0) Dec 4, 2008 Nevada

    There seem to be a lot of indicators here that the OP needs to get back to process.basics and let the brew gadgets collect some dust for awhile.
     
  3. minderbender

    minderbender Initiate (0) Jan 18, 2009 New York

    This is a very easy mistake to make. I remember the first time I used a refractometer I freaked out when I saw how ridiculously high the FG was, and I started panicking about my beer.

    Here is the refractometer calculator I like, but there are lots of others. If you don't remember what your original reading was in Brix, use a calculator like this one to convert from specific gravity to Brix. In your case, 1.069 corresponds to 16.8 Brix, and 1.030 corresponds to 7.6 Brix. Plugging those numbers into the calculator at my first link above, it looks as though your beer actually went from 1.066 to 1.011, a perfectly reasonable result.
     
  4. dmtaylor

    dmtaylor Savant (1,149) Dec 30, 2003 Wisconsin

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  5. Granitebeard

    Granitebeard Zealot (549) Aug 24, 2016 Maine

    Not to derail the thread: Average has been .016 above expected FG. I would have to look the recipe back up, but 90% of the grain bill is Golden Promise, the rest is just trying to adjust the color to a nice copper hue. Most of the remaining was something like 9L Munich, C20 and a splash of chocolate or roasted barely. Yeast is typically Themes River Valley. I use Brewcipher. The crush comment was me trying something out to get more out of it since I was finishing high. I basically carb really low and have a odd cask style beer...
     
  6. JeffTurner70

    JeffTurner70 Initiate (0) Sep 20, 2018

    Thanks for help and discussion.
     
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  7. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    I think the original problem has been solved, so let's keep going off the rails. Is that decimal in the right place? e.g. if you were expecting an FG of 1.010, you were actually getting 1.026?

    ETA: If you meant .0016 (i.e. 1.6 "points") then I think I see the issue. Looking at BrewCipher's Grain tab, Golden Promise's "basic attenuation" number is set at 0.83. Should have been set at about 0.81. I will update that in the next version. In the meantime, you could update it in your copy and see how close that gets you. In fact, if it's just the Golden Promise recipes that are off, you could plug in whatever basic attenuation number for GP that get's you closest (on avg) to what you're seeing.
     
    #27 VikeMan, Sep 21, 2018
    Last edited: Sep 21, 2018
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  8. Granitebeard

    Granitebeard Zealot (549) Aug 24, 2016 Maine

    This is the case with what I was experiencing. Yes the decimal is correct. Not small numbers. I usually see decent swings, but feel it is constantly high with Golden Promise.
     
  9. minderbender

    minderbender Initiate (0) Jan 18, 2009 New York

    Yeah, that's some crazy shit. I've used Golden Promise many times and in terms of gravity it's never performed noticeably different from any other pale ale malt.
     
  10. VikeMan

    VikeMan Grand Pooh-Bah (3,067) Jul 12, 2009 Pennsylvania
    Pooh-Bah

    Hmmm... if your OG is about right, but the FG is crazy high, I begin to wonder if there's a conversion problem, i.e. could a large portion of that OG be due to soluble starches that never converted to sugars.
     
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