Brandy balls

• 4 oz (100 g) plain chocolate
• 2 oz (50

Break the chocolate in a medium-sized mixing bowl and add the unsalted butter. Set the bowl over a saucepan one quarter filled with hot (not boiling) water and heat, stirring occasionally, until chocolate and butter are melted and blended. Draw off the heat and stir in the egg yolk.

Sift the icing sugar into a mixing bowl. Crush the sponge fingers in a polythene bag with a rolling pin a