Originally Posted by MtnHiBrewin
I bottled an Imperial Black Ale yesterday. When I strained the hops and transferred to the bottling bucket, I only had 4.25 gallons at 9.7% ABV. I wanted more beer than that, so I added 1 gallon of distilled water with the priming sugar. How do I figure the ABV after dilution?
7.8% ABV, if you had 4.25 gallons of 9.7% ABV beer + 1 gallon of water.
Few beers taste better watered down. You added about 20% water. Next time before diluting the beer, I'd suggest taking a sample and seeing if watering it down by 20% makes it tastes better. Sometimes a too-strong beer might need it I'd think, but most beers will not. A "big" beer like that might be ok.