Mix yoghurt, 1 tablespoon sugar and vanillin sugar. Line a sieve with kitchen paper. Pour in the yoghurt, cover and leave to drain overnight in the fridge
Select berries, wash if necessary. Mash all but a few and pass through a sieve. Stir with 1-2 tbsp. sugar
Cut 8 cams from the yoghurt. Decorate with raspberry puree, rolls, rest of berries, icing sugar and mint