Tender lentils slow-simmered with warming turmeric, finished with a sizzling tarka of golden ghee, roasted cumin, and fresh coriander.
Pressure-cook the toor dal with 2 cups water, turmeric and a pinch of salt until soft, then mash smooth.
Boil the shallots with tamarind pulp, 1 cup water, sambar powder and salt for 8-10 minutes until soft.
Add the mashed dal and simmer 10 minutes until slightly thickened.
Heat sesame oil, pop the mustard seeds, and pour over the sambar.
Serve hot with rice, dosa or idli.