1. Wash and squeeze tomatoes.
2. Peel off the skin from ginger and smash coarsely.
3. Keep other ingredients ready.
4. Heat oil in a pan/kadai, add asafoetida, splutter mustard seeds, add tomatoe, ginger, green chilly (slit into two pieces).
5. Add little turmeric powder, rasam powder and salt.
6. Mix well. Add water if required.
7. Finally add chopped coriander leaves.
8. Ginger rasam is delicious and ready to be served.
9. It can be had like soup or along with white rice.

Note: Since green chilly and ginger are added rasam powder can be reduced a little.

Optional: Ingredients can be added/removed.

Courtesy: http://tamilveg.blogspot.com/