The butter mix with sugar until white. To this was added the egg, cocoa, milk and flour mixed with baking powder. All stir and pour into a baking dish, covered with paper. Bake in a moderate oven. Eggs cream with sugar crash warm to graying. Allow to cool. The butter and stir in a little added to the cooled mixture. Dissolved in a little warm water was added to a cocoa cream. The base is cut horizontally and smeared with cream. Before blind kisses crushed between the two halves. Top and sides of cake smeared with cream or whipped cream and grated chocolate.