For the compote, wash, halve and stone the plums. Cut the flesh into slices. Boil up the juice. Stir cornflour and some water until smooth. Bind the juice with it.
Add the plums. Season with sugar and cinnamon. Let the compote cool down. Stir mascarpone, quark, icing sugar, vanilla pulp, lemon juice and liqueur until smooth. Serve cream and compote decorated with amaretti and mint