Cooking with Chocolate and Cocoa

Rich Chocolate Mousse Cake

Yield: 8 servings
 

Ingredients

4 egg whites
½ cup (100 g) sugar
5 oz (140 g) hazelnuts, finely ground
2 tablespoons unsweetened cocoa powder
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9 oz (250 g) dark bitter-sweet chocolate (60-70% cocoa)
4 egg yolks
1/3 cup (60 g) sugar
¼ cup + 1 cup (0.6 + 2.4 dl) whipping cream

Cake

1. Preheat oven to 350deg F (Gas mark 4 or 180 deg C).
2. Line a 9 inch (23 cm) cake tin with greaseproof or other non-stick paper and grease the tin.
3. Whisk the eggs whites until stiff and in peaks by using an electric mixer, gradually add the sugar and whisk well each time sugar has been added.
4. Mix with finely ground hazelnuts and cocoa powder.
5. Bake at 350 degrees until a wooden pick inserted in center comes out clean, approximately 15 minutes.
6. Cool the cake.

Filling

1. Melt finely chopped dark chocolate over hot water.
2. Beat the egg yolks with the sugar until white.
3. Heat ¼ cup whipping cream to the boiling point, and whisk in beaten egg yolks.
4. Fold in melted chocolate. The mixture will immediately thicken. Cool to approx. 100 deg F (38 deg C).
5. Whisk 1 cup of whipping cream. Fold with the egg and chocolate mixture, one tablespoon at a time until the filling becomes soft, then the remaining part of the cream.
6. Transfer to the cake tin, and place in the refrigerator for several hours.

If served cold the filling appears more like chocolate truffle than mousse.
If you prefer a more sweet flavor of the filling you can use semisweet chocolate (40-45%) instead of the recommended type.

Variations

For decoration - make chocolate panels to cover around outside of cake. To make chocolate panels: melt 8 oz (250 g) bittersweet chocolate. Spread onto a piece of baking paper. Allow to become matt dry. Mark panels height of cake x 2 inches (5 cm) by scoring with a knife. When set a little more, break off panel pieces and stick onto outside of cake by using a little mousse as a 'glue'. Overlap each piece little. Decorate top with piped mousse, chocolate dipped strawberries, etc. Tie a ribbon around circumference of cake (Submitted by Keryn Johnson, Greensborough, Victoria, Australia).
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