Finely chop the chocolate for the sauce. Heat the milk in a small pot. Remove the pot from the heat and melt the chocolate while stirring. Pour the sauce into a small bowl and put aside.
Roughly chop the nuts. Bring 1 tbsp. sugar to the boil with 2 tbsp. water and caramelise until golden brown. Stir in the nuts, then spread them on a piece of baking paper and let them cool down.
In the meantime wash, clean and chop the strawberries. For the cream, whip mascarpone with quark, lemon juice, 90 g sugar and vanilla sugar with the whisks of the mixer for about 2 minutes until creamy.
Fill the cream alternately with the strawberry cubes into the ice cream wafer bags. Break the nut brittle into pieces and sprinkle over them. Sprinkle with chocolate sauce.