1. In a vessel, add 2 cups of water, chopped tomato, salt, hing, rasam powder, whole green chilli, masoor dal and boil it for 12 minutes or until tomato turns soft.
2. Add 1.5 cups of water again and bring it to a boil.
3. Turn off the heat.
4. Temper with mustard seeds, curry leaves and jeera in ghee.
5. Granish with coriander leaves and squeeze lemon juice.
6. Mix well and serve with hot rice and curry!

Courtesy: http://spicesetc.blogspot.com/