Roughly chop the chocolate and nougat and melt in a hot water bath while stirring. Leave to cool a little.
In the meantime, select fresh raspberries and defrost frozen berries. Put 150 g raspberries and icing sugar into a high mixing bowl and puree finely with a hand blender.
Whip cream and vanilla sugar until stiff. Fold half of the cream directly into the cooled down nougat-chocolate mixture. Fold in the remaining cream in streaks.
Layer raspberries and cream in a dessert bowl and chill for about 2 hours. Dust with cocoa and pour some raspberry puree over it. Serve with the rest of the puree.