Peel and core the apples and pears, then dice. Drizzle with the lemon juice. Boil the apple juice (up to 30 ml) with the sugar. Add the fruits and cook for a few minutes. Mix the cornstarch with the 30 ml apple juice and use it to thicken the compote. Let cool and fold in the pistachios.
Mix the curd milk and the low-fat quark well, mix in the pulp of the vanilla pod and season with sugar or honey.
Layer the compote and sour milk cream alternately in glasses and serve.
Tip:
You can also leave out the pistachios and add some cinnamon instead.