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Old 12-11-2012, 06:31 AM   #1
Sep 2012
Posts: 38
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So I fly sparge and generally get really good efficiency like 85+. My understanding that the standard recipe is for an estimated 70% efficiency. My question is what do you do to scale if down to hit the correct OG? Do you just scale back the base grain or do you scale back the specialty grains as well?

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Old 12-11-2012, 10:02 AM   #2
GilSwillBasementBrews's Avatar
Jul 2012
Eagleville, Pennsylvania
Posts: 2,735
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You would want to scale all grains accordingly so that you maintain the same flavor profile that was expected from the recipe.
Beer Plus Science = .....Good!!!!! By: Adam Savage

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Old 12-11-2012, 12:31 PM   #3
Nov 2010
Solway, MN
Posts: 9,559
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Just use a bit more water and end up with more beer. What's wrong with that? With good temperature control you can ferment a 6 gallon batch in a 6 1/2 gallon fermenter bucket. I just did it and it worked well.

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Old 12-11-2012, 12:52 PM   #4
mean old man
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Oct 2012
Sterling, VA
Posts: 6,127
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I don't know about other brewing software, or even if you use any, but on the recipe Design tab in Beersmith, there is a box next to the Equipment selection where you can enter your efficiency and it will adjust the OG, color and ABV values in the Style Guide Comparison section. that box is defaulted to 72%; just change it to 85% and you'll see the 3 sliders shift to the right.

decrease the amount of grains to match it with your previous numbers.
"Beer. Good." - Words of House Grog

drinking: Otto M. Gourd Pumpkin Barleywine, Jewel Thieves Apple Wine, Fresh Squee Zed IPA - bottle conditioning: LoCo Foot Barleywine, Basque cider - lagering : Schwarzbier - fermenting: apple wine, Skeeter Pee - on deck: Grodziskie

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