Mix the cream quark with the milk and the cream with a mixer so that the mixture becomes loose, airy and creamy. Add the blueberries and stir in carefully. Then season with the brown sugar and chill in the refrigerator for a while.
Fill the quark mixture into glasses or bowls and serve decorated with a few berries.
Tip: Of course, you can modify the recipe with all kinds of berries of your choice.