n Preheat oven to 340 F (170C). The bottom of the springform pan lined with baking paper.nn Ingredients should be at room temperature. Separate the egg white from the yolks. Whip egg white to stiff, add sugar (created shiny cream). Separately, sift the flour and cocoa.  Add to the cream yolks and flour, mix. Put the dough in the baking pan.nn Bake cake to the dry stick, about 40 minutes. After baking drop the cake from a height of about 60 cm. Cool it in the pan.nn After cooling:nn I – one big cake – drill a hole in the cake, leaving  1 cm sides (crumbs put into bowl)nn II – four small cakes – cake cut into two tops, from each top – cut two small circles  (use a small plate). From the rest of the dough make crumbs.n