Cream fat and diabetic sweetness. Stir in eggs one at a time. Mix flour, starch and baking powder. Alternately stir in with the milk. Spread the dough on a greased fat pan (32 x 38 cm).
Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 20-25 minutes. Let them cool down afterwards. Slice the chocolate into small rolls with a peeler or chop very finely. Whip cream until stiff. Stir into the quark, season to taste with sweetener. Fold in the chocolate rolls, except for something to sprinkle. Spread 2/3 of the cream on the dough. Fill the rest of the cream into a piping bag with a large perforated spout and squirt it onto the cake as tuffs. Select the raspberries and spread them on the cake.
Fold in the chocolate rolls, except for something to sprinkle. Spread 2/3 of the cream on the dough. Fill the rest of the cream into a piping bag with a large perforated spout and squirt it onto the cake as tuffs. Select the raspberries and spread them on the cake. Sprinkle with remaining chocolate rolls. Decorate with lemon balm