Add oil...sugar and eggs in a mixer jar.
All the things we ues here should be on room temperature

Now take a medium size orange or keenu and cut into halves....we only use one half of it in cake.keep it aside another half.
Separate seeds carefully from the half part of keenu.
Cut into small pieces with skin.

Add this keenu into mixer jar and make a smooth paste of all the ingredients.transfer this batter in a bowl.keep siever on it and now we will add dry ingredients in it.

Add maida..salt and baking powder.
Sieve all the ingredients.
Mix batter with spatula
But don't over mix.

Transfer batter in a pre-greased baking tin.
Keep it in pre heated oven.
Keep 180 degree celcius for 40 to 45 minutes.
Its so tasty..you can see the air pockets.must try once