1. Beat the egg whites until stiff, add sugar and beat. Gradually add the egg yolks and finally mix the cake mix with cocoa and baking soda by hand.

2 . Pour onto greased baking paper or a greased tray.

3. Bake at 180°C for 5-10 minutes.

4. After baking, roll it while still hot into a roll and let it cool.

5. Make a thick pudding from milk, golden cream , flour, egg and sugar. Let it cool down. Stir in the cooled butter and divide the cream into 2 parts, add vanilla sugar to one, and 1-2 spoons of cocoa to the other.

6. Remove the paper from the sponge, spread light cream, cocoa cream, place bananas and roll into a roll.

7. Cover with chocolate glaze.