Cream fat, 2 tablespoons sugar, vanilla sugar and 1 pinch of salt with the whisk of the hand mixer. Add the eggs one after the other. Mix flour, baking powder and cocoa and stir into the dough alternately with the milk. Preheat the waffle iron and grease it lightly. Bake 4 waffles from the dough one after the other
Soak gelatine in cold water. Mix sour cream, quark, vanilla sugar and 50 g sugar. Squeeze the gelatine, dissolve, stir in 3 tbsp. cream, stir into the remaining cream. Chill for about 5 minutes until the cream starts to gel. Beat 150 g cream with the whisks of the hand mixer until stiff, fold into the cream
Peel the grapefruit so that the white skin is completely removed. Remove the fillets with a sharp knife between the parting skins. Squeeze the juice out of the parting skins. Peel and slice the bananas and sprinkle with lemon juice. Spread 1/4 of the cream on a wafer, spread 4-5 grapefruit fillets and banana slices on top, cover with a wafer
Process remaining cream, fruit and waffles in the same way. Refrigerate the wafer tower for approx. 1 hour. Mix the remaining fruit and add to the waffle tower. Bring 50 g cream to the boil in a saucepan, finely chop the chocolate coating and stir in. Let the chocolate sauce cool down for about 15 minutes, pour 2-3 tbsp. over the waffles. Add the rest of the sauce
waiting time approx. 1 1/4 hours