
Prepare the dough. Beat the eggs with granulated sugar at maximum speed for about 2-3 minutes. Add the sifted wheat flour, baking powder and 2 tablespoons of cocoa, mix thoroughly. The dough should be of medium thickness, if the dough is too thick, add a small amount of liquid - water or milk.

Place baking paper on a greased baking tray. Pour a teaspoon of dough at a distance of 2-3 cm from each other. Bake for 5-7 minutes until golden brown. You can check the readiness of the dough by piercing it with a toothpick, after which the toothpick should remain dry.
Remove the cakes from the oven and let them cool.

Prepare the cream. In a deep bowl, beat the butter with sugar using a mixer, then add sour cream and cocoa powder until the mixture is smooth and the sugar is completely dissolved.

Dip the blanks in cream, place on a flat plate. Make several layers.

Prepare the glaze. Place softened butter, sour cream, half a glass of sugar and 2 tablespoons of cocoa powder in a saucepan. Mix well. Place the saucepan with the mixture in a water bath and bring to complete dissolution, stirring with a spoon or spatula. Heat the mixture, but do not boil.
Pour the prepared glaze over the cake. And leave it in the refrigerator for a couple of hours.