Place the ladyfingers in a baking dish so that the entire bottom is covered with them (I have a few left over). Mix the finished red groats from the supermarket with 3 tablespoons of kirsch and stir well, pour over the ladyfingers.
Beat the mascarpone with yoghurt and 2 - 3 tablespoons of powdered sugar (depending on how sweet you want it) until it is creamy. Put this cream on the ladyfingers.
Cover everything with cling film or a lid and put it in the fridge overnight, then the ladyfingers pull through and become nice and soft. Theoretically lasts 3 - 4 days if stored in a cool place.