Cook thoor dhall and turmeric powder with extra water and keep them aside
Fry chana dhal, dry red chili, coriander seed, fenugreek seeds, cinnamon, cardamom and onion
Grind this mixture with tomato and coconut
Fry small onion in a pan for few minutes, and cook this in the thoor dhal water with salt
After it is cooked, add tamarind extract and cook for a few minutes
Add the ground masala
After this is cooked add the cooked thoor dhal
Heat little oil in a pan, splutter mustard, curry leaves, asafoetida and add this to the sambhar
Garnish with coriander
Notes
Variation
* Instead of a small onion, you can use either or these: yam, ash gourd, eggplant, raw banana, pumpkin
* Use Ghee or Coconut oil for tempering mustard, which will elevate the sambhar's flavor