Drain the canned tangerines, reserving the juice in a separate container.
In a bowl, combine the quark, cream cheese, and 100 ml of the reserved juice. Stir for 1-2 minutes until smooth and creamy. Add the sugar, vanilla sugar, and bitter almond flavor, stirring for another 1-2 minutes until well combined.
In a separate bowl, beat the cream with the cream stabilizer on medium-high speed for 2-3 minutes until stiff peaks form.
Gently fold the whipped cream into the quark mixture until fully combined. Fold in the drained tangerines. Divide into serving dishes, garnish as desired, and serve.