9. Melt the chocolate in double boiler over low heat .
10. Steep 1 Add the sugar to six tablespoons (which will be soft because you brought out of the fridge before starting. And includes the eggs yolks
11. This is all the things that you have to mix now
12. Steep 2 Beat the mixture until the mass homogenate.
13. Steep 3 Mix everything with a wooden spoon and gradually incorporate the melted chocolate and the flour.
14. Steep 4 Beat the egg whites until stiff and key to the chocolate mixture.
15. Steep 5 Cover with the remaining butter the bottom of a baking pan and put a little flour empty chocolate mixture into the pan and put in the oven for 30 minutes at 200° C.