Dissolve espresso powder in 100 ml hot water and let it cool down. Drain the peaches and collect the juice. Cut peaches into slices and sprinkle with Amaretto. Coarsely crumble the lady fingers and soak them with espresso. Stir mascarpone, curd and 2-3 tablespoons peach juice until smooth.
Stir in vanilla sugar and sugar. Put one half of the cream into a flat form, spread soaked lady fingers on top, cover with the remaining cream and smooth it down. Sprinkle with cocoa and chill for 2-3 hours. Use two tablespoons of the cream to cut off 8-12 dumplings and arrange on dessert plates with the marinated peaches. Decorate with lemon balm as desired