500 mlChampagne or sparkling wine110 gm (½ cup)caster sugar3½titanium-strength gelatine leaves200 gmraspberries (about 2 punnets)To serve:mascarpone, sweetened to taste with pure icing sugar
Combine Champagne and sugar in a saucepan, stir over medium heat until sugar dissolves, bring to the simmer and remove from heat.
Soak gelatine in a bowl of cold water until soft (5 minutes). Drain, squeeze out excess liquid, add to Champagne mixture and stir until dissolved. Set aside to cool.
Place raspberries in the bases of six 200ml dariole moulds, then carefully pour enough Champagne mixture over to just cover the raspberries. Gently tap moulds on bench to remove air bubbles and refrigerate until set (1-2 hours). Keep remaining jelly mixture at room temperature. Top moulds with remaining Champagne mixture and refrigerate until set (2-4 hours). Serve with sweetened mascarpone.