Grease a springform pan (20 cm Ø) and dust with flour. Preheat the oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Coarsely crumble the Amarettini. Separate eggs. Beat the egg white until stiff, then add 2 tbsp. sugar.
Cream 225 g butter, 100 g sugar and 1 pinch of salt. Stir in the egg yolks one by one. Mix 200 g flour and baking powder and stir in briefly, alternating with the milk. First fold in amarettine crumbs, then beaten egg white in 2 portions.
Fill the dough into the mould and smooth it down. Bake in the hot oven for about 1 hour. Cover with aluminium foil after about 35 minutes. Take out and let cool in the form for at least 2 hours.
Wash and clean the strawberries. Depending on the size, halve or quarter them. Soak gelatine in cold water for about 5 minutes. Mix mascarpone and 50 g sugar. Whip cream until stiff. Squeeze the gelatine well, dissolve in the espresso.
Stir in the liqueur. Gradually stir 2 tablespoons of mascarpone into the espresso liqueur mixture, then stir everything into the remaining mascarpone. Fold in the cream.
Remove the cake base from the mould and cut through horizontally twice. First 1⁄3 spread cream, then half the strawberries on the bottom cake layer. Cover with the middle cake base and repeat the process.
Cover with the top base, press down lightly and spread the rest of the cream loosely on top. Chill the cake for about 1 hour. Just before serving, dust with cocoa and decorate with chocolate shavings if desired.