Devil's Food Cake

Pre-heat the oven to 180'C/Gas mark 4. Grease and base line 2 x 8inch (20cm) sandwich tins with greased greaseproof paper.

Whisk the cocoa into the water until smooth. Set aside. Place the margarine in a bowl and gradually whisk in the sugar until the mixture is pale and fluffy. Lightly whisk the eggs, then gradually whisk into the creamed mixture until evenly blended.

Sift the flour with baking powder and bicarbonate of soda and fold into the creamed mixture alternatively with the cocoa and water.

Divide the mixture between the tins and level the surface. Bake in the pre-heated oven for about 30-35 minutes or until well risen and firm to the touch. Allow to cool in the tins for a few minutes, then turn out and leave to cool completely on a wire rack.

For the American frosting, place the sugar in a large, heavy-based pan with the water and heat gently until the sugar has dissolved. Bring to the boil and boil to 115'C (240'F) as registered on a sugar thermometer.

Meanwhile, whisk the egg whites in a large deep bowl until stiff. Allow the bubbles to settle, then slowly pour the hot syrup onto the egg whites, whisking constantly. When all the sugar syrup has been added, continue whisking until the mixture stands in peaks and just starts to become matt around the edges.

Sandwich the cakes together with a little of the frosting. Spread the remainder over the top and the sides, using a palette knife. Pull the frosting up into peaks all over. Work quickly as the icing sets rapidly. Leave to set in a cool place, but not in the fridge.