Cook rice with 3 cups of water until tender and almost mushy.*
Pressure cook the lentils until very tender and mushy.*
Par cook the veggies until almost tender. Keep aside.
Heat 2tbsp oil and 1tbsp ghee in a large pan; add the mustard seeds and once the seeds start to splutter, add the curry leaves, asafoetida and green chilies. Cook for 1~2 minutes.
Next add the par cooked veggies, turmeric and tamarind paste. Stir in 2 cups of water and simmer till the veggies are tender.
Add the cooked lentils, sambar powder and salt. Simmer for 5~10 minutes.
Add the cooked rice and 1~2 cups of water, depending on how thick you want the rice to be. Remember rice absorbs water as it cools and the dish gets very thick.
Taste and adjust the seasonings accordingly.