Authentic Tiramisu - cooking recipe

Ingredients

1 (17 1/2 ounce) box ladyfingers (Forno Bonomi Savoiardi)
10 ounces mascarpone cheese
3 eggs, separated
6 tablespoons sugar
12 cups espresso coffee, Strong and warm
1/8 cup bitter cocoa powder, enough to cover the top of the dessert
1/4 cup marsala wine

Preparation

Arrange Savoiardi \"Forno Bonomi\" in rectangular serving dish, lightly soak with coffee and the marsala wine.
While gradually adding sugar, beat egg yolks until very stiff and egg yolks appear pale in color, add mascarpone cheese and fold gently.
In a separate bowl, beat egg whites with a wire wisk or electric beater until very stiff and gently fold egg whites into the mascarpone mixture.
Cover Savorardi with this cream mixture, use all the ingredients to obtein more layers. Sprinkle the top with bitter cocoa powder.
Refrigerate at least one hour before serving.
NOTE: TIRAMISU may be frozen and should be defrosted in the refrigerator for at least 8 hours before serving.