Mixed red berry and mascarpone cake

Ingredients

• 1/3 cup (80ml) kirsch or grand marnier
• 750 gram mascarpone
• 1 1/2 cup (375ml) thickened cream
• 1/3 cup (75g) firmly packed brown sugar
• 250 gram strawberries, hulled, sliced lengthways into thirds, plus extra to serve
• 100 gram raspberries, plus extra to serve
• 8 savoiardi (sponge fingers)
• pure icing sugar, to dust
• Raspberry coulis
• 250 gram raspberries
• 1/4 cup (40g) pure icing sugar
• 1 tablespoon lemon juice