Saperate eggs white and yolks. Beat egg whites with castor sugar till fluffy. Then add egg yolks.

Mix egg yolks with light hands. Sift flour with baking powder and baking soda with pinch of salt. Mix it in the eggs mixture.

Divide mixture into two bowls. In one bowl sift coca powder and mix it.

Pour vanilla batter first in a greased pan, then pour cocoa batter into the bottom of cocoa batter.

Pour all the batters alternatively. When all the batters are finished then take a skewer and make a flower in the batter. Bake it at 180° for 25 to 30 minutes.