Mary Berry served up a delicious chocolate mousse cake that is ideal for the festive season on Saturday Kitchen.

The ingredients for the chocolate cake: 25g cocoa powder, plus extra for dusting, 3 tbsp boiling water, 100g caster sugar, 100g self-raising flour, 1 level tsp baking powder, 2 large free-range eggs, 100g margarine, plus extra for greasing and 2 tbsp brandy.

For the mousse: 300g plain chocolate (no more than 40-50 per cent cocoa solids), broken into squares, 450ml whipping cream.

To serve: 225g fresh raspberries and blueberries, double cream and icing sugar, for dusting.