Heat a pan or cooker add half tsp asafoetida, half tsp mustard, few curry leaves. Saute it then add mashed tomatoes and orange juice. Add required rasam powder, salt.

Heat a pan add half tsp asafoetida, half tsp mustard, few curry leaves.
Saute it then add mashed tomatoes and orange juice. Add required rasam powder, salt and turmeric powder.
Boil it for few minutes. Don’t over boil. Switch off and add finely chopped coriander leaves.

Heat the same pan with ghee add cumin seeds, chilli (optional)after few second add this to the rasam.
This rasam is just like soup. Very tasty tasty rasam ready