1. Grind all the ingredients except oil in a blender.
2. The batter should be as thick as any other dosa batter.
3. Add enough water to get the required consistency.
4. Heat the non-stick tawa on the stove on medium heat.
5. Once the tawa is hot, reduce the heat and spread the batter on the tawa like any other dosa.
6. Pour a little oil and cook covered until done.
7. Cook pesarattu on both sides.
8. Once done, remove from tawa and serve hot with butter and coconut chutney.

Tip:
Adding 1-2 tsp of rice flour to the batter would make it easy for you to remove the pesarattu from tawa after cooking.

Courtesy: http://maneadige.blogspot.com/