Preheat oven at 180 degree
Grease the baking tray
In a mixing bowl add sugar and curd and mix it till fluffy
Add baking powder and baking soda in the batter
Add flour and vanilla essence and mix it
Divide the batter in two batches
Pour one batch in the baking tray
Add cocoa powder in the second batch and mix it
Pour this batter over the first one and tap twice
Bake in oven at 180 ° for 20-25 minutes
Cool it on the wire rack and demould it and cut it into pieces
