Ingredients
Sponge
175 g/ 6 oz/ ¾ cup of butter
75 g/ 6 oz/ ¾ cup of caster (superfine) sugar
4 eggs, lightly beaten
200 g/ 7 oz/ 1¾ cups of self-raising flour
1 tbsp cocoa powder
50 g/ 1¾ oz of dark orange-flavored chocolate, melted
ORANGE MOUSSE
2 eggs, separated
50 g/ 1¾ oz/ 4 tbsp of caster (superfine) sugar
200 ml/ 7fl oz/ ¾ cup of freshly squeezed orange juice
3 tbsp water
300 ml/ ½ pint/ 1¼ cups of double (heavy) cream
peeled orange slices, to decorate
Preparation
- Grease a 20 cm/ 8 inch spring form cake tin (pan) and and line the base. Beat the butter and sugar in a bowl until light and fluffy.
- Gradually add the eggs, beating well after each addition.
- Sieve (strain) together the cocoa and flour and fold into the cake mixture.
- Fold in the chocolate.
- Pour into the prepared tin (pan) and level the top.
- Bake in a preheated oven, 180°C/350°F/Gas Mark 4, for 40 minutes or until springy to the touch.
- Leave to cool for 5 minutes in the tin (pan), then turn out and leave to cool completely on a wire rack.
- Cut the cold cake into 2 layers.
- To make the orange mousse, beat the egg yolks and sugar until light, then whisk in the orange juice.
- Sprinkle the gelatin over the water in a small bowl and allow to go spongy, then place over a pan of hot water and stir until dissolved.
- Stir into the mousse.
- Whip the cream until holding its shape, reserve a little for decoration and fold the rest into the mousse.
- Whisk the egg whites until standing in soft peaks, then fold in.
- Leave in a cool place until starting to set, stirring occasionally.
- Place half of the cake in the tin (pan).
- Pour in the mousse and press the second cake layer on top.
- Chill until set.
- Transfer to a dish, pipe cream rosettes on the top and arrange orange slices in the centre.
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