In a mixing bowl add the curd and baking soda. Mix them well and keep aside for about 10 mins till the soda react with curd and bubbles.
Sieve the flour and baking powder 2-3 times and keep aside.
In the curd mixture add sugar, ghee, milk, vanilla essence and mix well.
Add in the flour mixture and gently fold and make a smooth batter.
Preheat oven @180° for 10 mins. Grease the cake pan with ghee or oil.
Pour in the batter to the greased cake pan and tap 2-3 times.
Bake @180° for 35-40 mins. A tooth pick inserted should come out clean. Mine took exactly 35 mins.
Remove from oven, let it stand for about 5 mins and invert. Let it cool down completely, cut and serve.
