In mixie jar put oil,milk,sugar, vanilla essence grind it

Take out in a bowl add maida, zest, baking powder, baking soda mix it well take half of this mix add cocoa powder now we have two flavour s

Now take greased bowl and add both flavour one by one with a spoon till half of the bowl

With a toothpick make desired design on the batter

Now heat a pan for 5 min and keep the bowl and bake for 20,25min check after that.need more time then keep for some time