I know most people use Beersmith or some other software to develop recipes but I don't, I use an excel spreadsheet because it forces me to learn some things. One of those things are Tinseth's wonderful IBU equations. One of the key components of this calculation is the boil volume in gallons. Two others are boil time and boil gravity (to determine utilization).
Any thoughts on this? I kind of expect to hear crickets on this one, I should probably just accept it and move on.