Drain the rum pot, collect the rum and bring to the boil. Stir the starch with a little water until smooth and thicken the rum. Add fruits and let cool down. Grate the marzipan. Separate the eggs.
Cover and chill the egg white in a mixing bowl. Beat the fat, sugar, vanillin sugar and marzipan until creamy with the whisk of the hand mixer. Gradually stir in the egg yolks. Add liqueur.
Mix flour and baking powder and stir alternately with crème fraîche and milk into the fat egg mixture. Beat the egg whites with the whisks of the hand mixer until stiff. Fold into the dough in portions.
Preheat and grease the heart waffle iron. Bake 8 waffles one after the other. Divide the waffles into hearts and arrange on plates with rum pot. Dust with icing sugar. Decorate with marzipan flowers if desired.