Chocolate fondant

Preparation

1. Preheat oven to 180°C (gas mark 6).
2. Melt the chocolate and butter in a double boiler over low heat.
3. Meanwhile, separate the egg yolks from the whites.
4. Beat the egg whites until stiff, then set aside.
5. When the chocolate and butter mixture has melted completely, add the egg yolks and whisk.
6. Add the sugar and flour, then fold in the egg whites without breaking them.
7. Butter a cake pan and pour in the cake batter.
8. Bake for 20 minutes.