Soak the raisins in rum. Beat the egg white, sugar, vanilla sugar and cream stiffener to make a creamy egg whites. Mix the poppy seeds and flour and fold in with the raisins and walnuts. Place small heaps of the mixture on the wafers with a teaspoon. Bake in the preheated oven at 180 degrees (electric stove) on the second rack from the bottom for 20 minutes. Allow to cool and then cover with white chocolate icing and decorate with a touch of poppy seeds and a raisin (or nut) each.