Mix 250 ml of peach juice with 2 packets of vanilla sauce using a hand mixer for about 1 minute.
Add raspberries and peaches and fill in a large glass bowl.
Whip the whipped cream with the vanilla sugar and cream stiff until stiff. Mix the low-fat quark, possibly a little sugar and natural yoghurt and fold in the whipped cream.
Pour the quark mixture over the fruit, then sprinkle with brown cane sugar.
Let the yoghurt fruit dish steep in the refrigerator overnight.