This is a dessert with the typical German ingredient pumpernickel bread. It could be called a German version of tifle, and there are several variations of it. If you don't have pumpernickel bread, you can also use any other dark stale bread, as long as it's a hearty, slightly sweet one. For the raspberry schnaps you can also use kirsch or Chambord. If you can get hold of vanilla sugar, use 2 tablespoons of it or more to taste. This dessert is not very sweet! Cooking time is resting time.