Mash the chestnuts. Mix flour and chestnuts. Heat the milk lukewarm. Stir into the flour mixture with the whisk of the hand mixer. Fill small moulds (approx. 8 cm Ø; 5 cm high) with olive oil and let them rest.
Mix ricotta, sugar, lemon peel and liqueur. Spread the cream evenly over the moulds. Bake in the preheated oven (electric: 175 °C/ gas: level 2) for 35-40 minutes. In the meantime, sort and wash the raspberries.
Drizzle with syrup and lemon juice. Serve tepid with the marinated raspberries. Decorate with mint and fine strips of lemon peel.