Oh boy, this does make it difficult. I will give the mother a list of ingredients and let her decide what and how much her son can eat. She definately wants the cake, and I suppose, if I give her the list, she can calculate how much her son will be allowed to eat and how she needs to medicate. So if I tell her how much fat, flour and sugar is in the ckae she can calculate the servingsize, right? She already said she would scrape off the frosting as much as possible from his piece, in addition to not giving him a piece from the edge, but rather from the middle, where there won't be so much to start with. I don't have such a good feeling making this cake, it worries me, but I also feel sorry for the child, who has his heart set on having a cake he can be proud of and showing off to his friends. But ultimately the responsibilty does lie with his parents and they are the ones, who asked me to do the cake. So why do I feel like this? At least I can give her the list, which she wouldn't get, if she went to a bakery. Tracking down substitutes for cake flour is not that easy here in Shanghai, plus I'd have to find recipes for them, should I find them. I'll just go with the flour I have and rely on the mother's judgement, based on the complete list of ingredients for that cake. Regards Ursula