Originally Posted by legend
I read somewhere that you don't use the same amount of hops to to utilization? Also this is my first time using a 15 gallon keggle, so i wanted to start with the right amount of water to get 10 gallons after the boil. The kits directions are for a 5 gallon partial boil where you start with 3 gallons then add 2 gallons of pure water to the carboy to get the 5 gallons, but i want to do a full boil to yield 10 gallons.
Read a brief discussion the other day on the real differences between homebrewing scale and micro/macro scales, and the suggestion was that hop utilization doesn't change appreciably until you're at least in multi-barrel volumes, or more. I also understood the reason to actually be increased efficiencies by their process and equipment, rather than simply volume.
So, perhaps if you're making an exceptionally hoppy brew you could lower by an ounce or two, but if the difference would only be a quarter ounce in 10 gallons... would you even notice without a side-by-side?