First, wash and soak the dal for at least 1 hour
Discard the water and add a 1:3 ratio of water, a pinch of turmeric powder, and a drop of oil
Pressure cook for 3 whistles and let the pressure release naturally
In a wide pan, add oil, and when the oil is hot, add mustard seeds and fenugreek seeds; let it splutter
Add onions and saute for 2 minutes or till onions turn translucent
Furthermore, add carrots, drumsticks, and okra and saute for a minute
Add the required salt and saute for 2 minutes
Pour water and give a quick mix
Furthermore, add tamarind paste and turmeric powder and mix well
Boil for 10 minutes, and mix well in between
Add 1 cup of water and boil for 5 more minutes
Check if the vegetables are fork-tender; also tamarind raw smell goes off then add mashed cooked dal
Furthermore, add curry leaves, coriander leaves, salt if required, hing, and little jaggery, mix well, and cook for 5 minutes
Add water and adjust the sambhar according to the consistency you desire
Lastly, add a dollop of ghee and turn off the stove
If the sambhar thickens over time, add a little hot water and boil for 3 minutes, and serve