how to cook or make - Sambhar

This recipe from Sriram
Quantity Ingredient
1 cup Toor Dal
1 teaspoon Tamarind
3 teaspoons Salt
a pinch Turmeric
2 teaspoons Channa Dal
3 teaspoons Dhania seeds
1 pinch Hing
3 Red chilies
1
4 cup Grated coconut
1 teaspoon Mustard
10 Coriander leaves
1 Green peppers cut into pieces
1 Onion chopped
1 Tomato cut into pieces

Method
1. Boil the toor dal with 3 cups of water.
2. Fry channa dal, dhania seeds, hing, and red chilies for a few minutes,
and then fry them with the grated coconut.
3. Grind the above mixture with water.
4. Fry the green pepper in oil for a few minutes.
5. Boil the tamarind paste, water, salt, turmeric, tomato and vegetables.
6. Add ??? 3 ??? and cook for about 5 minutes.
7. Add boiled dal and bring it to a boil
8. In the meantime fry the mustard seeds and onion.
9. Add the above ingredients & coriander leaves to the mixture.