Mash the cooked dal well and add 2 cup water
Grind the pepper corns and cumin seeds together and add garlic and grind well
Soak tamarind in half cup water and take thick pulp out of it
Add the tamarind paste to the dal(Add water if its too thick)
Add the sliced tomato to the dal mixture and smash it with a spoon
Heat a pan and add oil
When hot add mustard seeds, red chillies and curry leaes
Then add this to the dal- tamarind- tomato mixture
Then add the garlic-pepper-cumin mixture to the dal
Mix well
Add asafetida powder and salt and bring to a boil
Stir well
Reduce heat and cook till its done
Once its cooked add chopped fresh coriander leaves
Sieve the rasam before serving (Optional)
