Entered into this calculator for my own amusement in case I find myself with the ingredients to make it one day. The 60 minute hop addition is based on the analysis of the Munton's Traditional Bitter prehopped kit, which is 35 - 45 "EBU." The original recipe was created by Craig Farraway during a broadcast on his Youtube channel, Craigtube, with ingredients he had laying around. He used Cooper's LME but I cannot get that in my area so I would have to use Munton's. Do you even care?