Bake the sponge cake :
4 eggs, 2 whites, a Cup of sugar, Cup of flour, citric acid on the tip of a knife.You can add vanilla.
Beat the whites with the sugar and citric acid to hard peaks.
One to enter the egg yolks, beat well.
Parts add the flour and gently stir.
Pour the batter in split form, covered with paper.
Bake for 25-30 minutes at 180 degrees.
To get the cake from the form. Remove the baking paper. Allow to cool completely. Then cut into two cake.
Preparation cream: mix 200 g butter, 200 g of cottage cheese, 300 g condensed milk.