Wash and clean blueberries. Mix the currant juice with the starch and sugar, bring to the boil, add the blueberries, simmer for approx. 3 minutes, then allow to cool and refrigerate.
Cut the couverture into small pieces, melt the whipped cream with couverture, vanilla sugar over a mild heat, remove the saucepan from the heat, stir the mixture until smooth, allow to cool.
Then stir in the cream cheese, whole milk yogurt. Also put the cream in a cool place. Layer the chilled cream alternately with the blueberries in tall glasses and serve.