For the syrup, wash organic lemon hot, rub dry. Grate the peel, put aside. Squeeze juice from 2 lemons (80-100 ml). Boil up with 75 g sugar and 100 ml water. Simmer for about 5 minutes.
Let the syrup cool down.
Wash, halve and stone the apricots. Puree the apricots and pass through a sieve. Squeeze the juice from 3 lemons. Stir mascarpone, quark, 75 g sugar, vanilla sugar, lemon juice and zest until smooth.
Whip cream until stiff and fold in.
1⁄3 Put biscuits in a large glass bowl. Sprinkle with 1⁄3 lemon syrup. 1⁄3 Put mascarpone cream on top. 1⁄3 Drizzle apricot puree over it. Layer remaining ingredients in the same order.
Chill for at least 2 hours.
Select, wash and clean the berries. Halve or quarter strawberries, depending on size. Approx. 15 minutes before serving, mix the berries and 2-3 tbsp. sugar and leave to stand. Sprinkle cream with pistachios and serve with the berries.