Mix 4 yolks with margarine until foamy, mix in vanilla sugar and icing sugar, stir in chocolate, hazelnuts, flour, baking powder, cinnamon and rum. 4 Beat clear to firm snow and gradually stir in the granulated sugar until a firm cream is formed. Lift this under the mass. Strain the cherries and fold them into the mixture. Then fill the dough into a greased springform pan (24 cm diameter) sprinkled with grated hazelnuts and bake for about 50 minutes at 180 degrees.