Author Topic: BU/GU Ratio  (Read 7898 times)

Offline Stuntman

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BU/GU Ratio
« on: October 03, 2008, 04:51:37 PM »
I've just recently discovered this little gem!  It could help explain some of the 'surprise' outcomes of some of my creations!  However, I have now created a couple beers that had ratios well over 1.0 according to BeerSmith!  I may be wrong, but 1.0 is supposed to be the highest that Ratio can go?  I also once had one that had some strange formatting errors..

Am I doing something wrong, or is that ratio maybe not working quite the way it was intended?


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Re: BU/GU Ratio
« Reply #1 on: October 03, 2008, 05:39:16 PM »
  The ratio is covered in Ray Daniel's book "Designing Great Beers" which I reviewed on the blog.  It can be over 1.0 - this is no problem.

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Offline MaltLicker

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Re: BU/GU Ratio
« Reply #2 on: October 14, 2008, 06:24:15 AM »
Stuntman - That ratio is great for dialing in on your preferred tastes/bittering level in a style.  Below is a BU:GU ratio of 1.23 on my hoppiest APA to date.  The OG came in lower than estimated (1.059) due to cutting the mash short and sparging issues, so that increased the ratio from an estimated 1.06 to the 1.23.  It is also very helpful when trying to copy a printed recipe.  Just enter the exact recipe as printed to get the original BU:GU ratio, and then when you adjust for your parameters, process and ingredients, try to tweak the ratio towards the original.  And in theory, if you dumped 200 IBU into a 1.050 wort, the ratio would be 4.00.  Maybe not drinkable, but a 4.0 beer. 

Style: American Pale Ale
Recipe: 10A Amarillo APA v2   TYPE: All Grain
Recipe Specifications
Est SRM: 8.6 SRM      SRM Range: 5.0-14.0 SRM
Est IBU: 63.4 IBU      IBU Range: 30.0-50.0 IBU
Est OG: 1.051 SG      OG Range: 1.045-1.060 SG
Est BU:GU: 1.231
Estimated FG: 1.012 SG      FG Range: 1.010-1.015 SG
Estimated ABV:   5.09 %      Calories: 229 cal/pint
EE %: 64.00 %   Batch: 3.65 gal     Boil: 4.25 gal   BT: 70 Minutes