Roughly chop the Amarettini. Cream fat, sugar and salt. Stir in the eggs one by one. Mix flour, amarettini and baking powder. Alternately stir in with the milk. Grease a springform pan (26 cm Ø) and dust with flour. Add the dough and smooth it down.
Bake the cake in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for 30-35 minutes. Leave to cool on a cake rack and remove from the tin. Warm up the strawberry jam, spread on the cake and let it cool down. In the meantime, mix mascarpone, sour cream, lemon peel, lemon juice and vanilla sugar. Fold in chocolate rolls. Spread the cream on the cake in a wavy shape with a spoon. Serve the cake decorated with strawberry slices, amarettini, chocolate rolls and lemon balm