Raspberries selected. Heat 4 tablespoons of sugar and liqueur in a pan until the sugar is dissolved. Add the raspberries, except for something to decorate, mix in carefully and keep cool.
Cream 4 tablespoons of espresso, mascarpone and 4 tablespoons of sugar with the whisks of the hand mixer. Coarsely chop the biscuits. Layer the biscuits, raspberries and cream in glasses. Sprinkle a little espresso on each layer of biscuits.
Decorate with remaining raspberries.