The cake that melts in your mouth! delicious dessert

I can't resist this delicious dessert!
The cake that melts in your mouth!

Ingredients:
eggs: 6 pc
salt: 2 g (0.1 oz)
sugar: 100 g (3.5 oz)
lemon juice: 20 ml (0.7 fl oz)
starch: 40 g (1.4 oz)
mascarpone: 300 g (11 oz)
whipping cream: 200 ml (6.8 fl oz)
powdered sugar: 50 g (1.8 oz)
vanilla sugar: 10 g (0.4 oz)
berries: 200 g (7.1 oz)