bpgreen wrote:Another thing to keep in mind is that IBUs don't tell the whole story. 100 IBUs in a beer that had a 1.060 OG and a 1.015 FG will be perceived differently from 100 IBUs in a beer that had a 1.060 OG and a 1.020 FG. The latter beer will seem less bitter because there are more unfermented sugars so there's more sweetness to offset the bitterness. Similarly, if you start with an OG of 1.060 and end with a 1.010 FG, the latter will seem more bitter because there's less residual sweetness.
Of course, similar things apply for different OG/FG combinations. A higher ratio of OG:FG means less residual sugar and more sweetness to be balanced by the hops and vice versa.
Yeah I always look at my Bitterness ratio as Beersmith calls is IBU/SG I keep my Ipa's around 1-1.50 and my Doubles can get up to 2 or more..