Chocolate chestnut cakes | Gourmet Traveller

Ingredients

• Cakes
• 3 eggs
• 85 gm caster sugar
• 50 gm cornflour (1/3 cup)
• 25 gm Dutch-process cocoa, plus extra for dusting (¼ cup)
• 1 tsp cream of tartar
• ½ tsp bicarbonate of soda
• 1 tbsp plain flour
• 40 gm unsalted butter, melted
• ½ cup thickened cream
• ¼ cup sweetened chestnut purée (available from delicatessens)
• Chocolate sauce
• 200 gm dark chocolate, chopped
• 50 gm unsalted butter