Melt the fat in a small pot, let it cool down a little. Mix flour, 1 tablespoon sugar, baking powder and salt in a bowl. Whisk milk and eggs. Pour into the flour mixture while stirring and mix to a smooth, thin wafer dough. Stir in liquid fat. Preheat the heart-shaped waffle iron, grease it and bake 6 waffles one after the other. Take them out and fold them over immediately, putting some kitchen paper in between.
Peel and slice the clementines. Beat the quark, vanillin sugar, lemon juice, lemon peel and 3 tablespoons of sugar until creamy with the whisks of the hand mixer. Whip the cream until stiff, allowing the cream setting agent to trickle in. Fold the cream into the quark. Pour into a piping bag with a perforated spout. Place clementine slices in each wafer, sprinkle cream on top and cover with another clementine slice. Sprinkle with pistachios and decorate with melissa
10 minutes waiting time