Put the eggs and granulated sugar in the mixer bowl. Mix it with a mixer. Add cocoa. Add the flour and baking powder. Mix it with a wooden spoon, pour it into the cake circle and bake it in a preheated oven at 170 degrees for 30-40 minutes. Put milk, sugar, flour, vanilla in a saucepan and put it on the stove. Stir with a whisk until it boils. Let it cool down. When cool, cut the cake into 3 layers. Put the whipped cream and milk in a bowl and mix with the mixer. Place the cake on a wide plate. Wet the first layer with milk. Put 2 tablespoons of whipped cream into the cream. Spread the cream over the moist cake and sprinkle with the chocolate chips. We apply the same procedure to the other floor. We also wet the cake that we put on top. Cover all parts of our cake with whipped cream and close it. Pour over the chocolate sauce and decorate with chocolate chips. We serve it after storing it in the refrigerator for at least 2 hours. Enjoy your meal.