What revision? Correct me if Im wrong (others do it, Im cool with it). What was Schell doing in that 50 year period that was so out of the mainstream with the rest of the brewing industry? Ive never even been in the state of MN, I dont have any clue to their history. I know what my local was doing during that time...adopting the pop tap can and creating Billy Beer. One of those is marginally interesting. But it doesnt lead to good beer. Its, as best I can tell, very similar to current zoigl recipes. When I get to Franconia to compare and contrast I will let you know (and probably alter my recipe a bit, but I doubt much).