How to make Nigella Lawson's Flourless Chocolate Cake Part 3

Beat egg whites until stiff and shiny, you should be able to hold the bowl upside down for at least five seconds.

Lighten the chocolate mixture with a dollop of egg whites, and then fold in the rest of the whites.

Pour into the prepared pan and bake for 35-40 minutes or until the cake is risen and cracked and the center is no longer wobbly.

Cool the cake in its pan on a wire rack; the middle will sink as it cools.