Take the soaked tamarind and mix it in water in a bowl. Add chilli powder, coriander powder, turmeric powder, asafoetida, cumin powder, ginger garlic paste and salt to this rasam.

In a frying pan, heat oil and papaya mustard seeds.add curry leaves. Add small onion, the green chilli and the diced tomato. Saute well.

To this, add the rasam mixture. Heat, but don't allow to boil.

Before turning off the flame, garnish with coriander leaves and serve hot with plain rice.