Othello Layered Cake

Description
In Romanian: Tort Othello

Ingredients
Filling:
 * 9 eggs,
 * 9 tablespoons Sugar,
 * 2 tablespoons coffee essence,
 * 2 oz/55 g cacao,
 * 2 oz/55 g flour,
 * 2 oz/55 g chopped walnuts,
 * hazelnuts or almonds,
 * oil, flour to dust pan,
 * fruits from preserves;
 * 5 tablespoons water,
 * 2 1/2 oz/75 g cacao,
 * 7 1/2 oz/225 g Sugar,
 * 7 1/2 oz/225 g butter,
 * 1/4 cup rum

Directions

 * 1) Whip the egg whites, gradually adding the 9 tablespoons of Sugar.
 * 2) Then gradually add the 9 yolks, stirring continuously.
 * 3) Add cacao, flour, ground walnuts, coffee essence (strained and cooled) and mix well.
 * 4) Pour into a rectangular pan which was previously greased with oil and dusted with flour and bake at medium heat.
 * 5) When done, turn onto a cutting board.
 * 6) After it is completely cold, cut lengthwise in 3 equal parts.
 * 7) Spread the following cream on each sheet.
 * 8) Mix the Sugar with the cacao, add water and set to boil to thicken like sour cream.
 * 9) Let cool, then mix with beaten butter and rum. Mix well.
 * 10) Divide the cream into 2 equal parts.
 * 11) Use one of these parts to spread on the sheets and lay them one on top of the other.
 * 12) Use the other half of the cream to cover the cake.
 * 13) Garnish with fruits from preserves and serve the following day, cut in triangles.