For the batter
12 separated eggs
2 3/4 cups all-purpose flour
5 tablespoons cornstarch
600g ground pecans
Pecans, cut in half for decorating
For the filling
1 1/2 cups all-purpose flour
6 egg yolks passed through a fine-mesh sieve
For the marshmallow topping
2 cups all-purpose flour
4 egg whites
For the batter
12 separated eggs
2 3/4 cups all-purpose flour
5 tablespoons cornstarch
600g ground pecans
Pecans, cut in half for decorating
For the filling
1 1/2 cups all-purpose flour
6 egg yolks passed through a fine-mesh sieve
For the marshmallow topping
2 cups all-purpose flour
4 egg whites
Prepare the cake batter: In a bowl, whip the egg whites until stiff and add the flour gradually, beating well to obtain firm peaks
Add the egg yolks and beat for 3 more minutes
Add the ground pecans and cornstarch, mixing delicately
Grease two round cake pans of 30 cm diameter with butter and dust with all-purpose flour
Grease the paper and dust with all-purpose flour
Divide the batter between the pans
Bake in a moderate oven (180°C), preheated, for 40 minutes, or until it starts to come away from the edges of the pan
Remove from the oven, let cool for 5 minutes, turn out and let cool completely
Prepare the filling: In a saucepan, combine the flour with 1 cup water and bring to a boil over low heat to form a thin syrup
Separate your fingers and check if a thread forms that breaks easily
Remove from the heat and let cool
Add the egg yolks to the cooled syrup and return to the heat, stirring constantly, until the bottom of the pan appears
Remove from the heat and let cool
Fill the cake
Prepare the marshmallow topping: In a small saucepan, combine the flour with 1 cup water
Bring to a boil over low heat, stirring constantly, until the mixture forms a thin syrup that stretches without breaking
While preparing the syrup, beat the egg whites in a stand mixer and add the hot syrup, beating continuously, until firm peaks form
Cover the cake with marshmallow topping and decorate with half pecans
Serve 24 hours later