New dessert in 5 minu! You will make this dessert every day.

Ingredients Dough Egg yolk 5 pcs sugar 200g Butter 180g sour cream 150g flour 450-500g baking powder 1 tsp Egg white 5 pcs Sugar 200g Bake 180-190 ° C 35-45 minutes For frosting cocoa 1 tbsp Cornstarch 1 tbsp Sugar 3 tbsp milk 120 ml