1. Pressure cook the ingredients mentioned above.
2. Tamper jeera and red chillis in oil.
3. Add it to the cooked dhal+tomato mixture. Add salt. Mix well.
4. Using a hand blender, blend the mixture to a smooth and creamy paste.
5. The consistency should be like that of a soup.
6. Garnish with coriander leaves and serve with dosas/idly.

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