Tried a new recipe for Katsutera from: http://justhungry.com/2006/08/oyatsu_and_kasutera_castella_a.html according to the author this is a challenging recipe and I agree. My attempt was made all the more difficult by the fact that I've never had Katsutera (at least not that I can recall) and therefore don't know what the texture is supposed to be like. The most difficult and make-it-or-break-it step is the beating of the eggs and sugar. I didn't really know what to expect so I didn't dare use a high speed for my electric whisk for fear of overbearing the eggs - which turned out to be an unfounded fear because I whisked for 1+ hour at low speed and it is pretty evident when the mixture thickens (the mixture actually quadrupled in volume). The second mistake was attempting to eat and cut the cake before letting it sit in the fridge overnight or at least several hours. This step allows the cake to get denser and more compact. (All this based on messages from friends who have tried the cake before.)