Clean, wash and cut the rhubarb into large pieces. Bring the currant juice, vanilla sugar and rhubarb pieces to the boil briefly in a saucepan and steam over a low heat for 5-10 minutes
Wash and clean the strawberries and, depending on size, cut them in half or quarters. Add to the hot rhubarb. Let the compote cool down
Whip the cream until stiff. Mix quark, lemon peel and juice. Season to taste with sugar. Then fold in the cream
If necessary, puree the compote with the cutting stick of the hand mixer. Layer cream quark and compote or fruit puree alternately in 4 high dessert glasses. Decorate as desired with lemon balm