Wash the Toor Dal thoroughly and pressure cook it with turmeric powder and water for 4-5 whistles.
Mash the cooked dal until smooth.
cook all the chopped vegetables in a pan with a little water until tender.
Add tamarind pulp , sambar powder, red chilli powder and salt. Simmer for 5-7 minutes.
Add the mashed dal and mix well.
Adjust the consistency by adding water if required and simmer for 8-10 minutes.
Heat oil or ghee in a small pan.
Add mustard seeds , cumin seeds, dry red chillies, hing and curry leaves. Let them splutter.
Pour the tempering over the sambar and mix well.
Garnish with fresh coriander leaves and serve hot.