Dev,
here is the my mom's version of murunga elai sambar
Drumstick leaves sambar:
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toor dhal - 1 cup (boil and keep aside)
Now grind the following:
red chilly - 5
jeera - 1/2 tsp
garlic - 5 pips
coconut - 4 tblsp grated
dhania seeds - 2 tsp
grind the above ingredients like a chutney and keep separately.
now in a pressure pan, add oil, kadukku, urad dhal, 1/4 tsp of jeera, 1 red chilly . when kadukku pops up add curry leaves, then add small onion - chopped, 200 gm (roughly chopped), fry till it turns into pink colour.
then add the ground masala and fry nicely till nice smell comes out of it.
now add 4 tomatoes medium size, chopped and fry till it comes like a gravy , then add 2 cups of drumstick leaves, fry for 2 minutes, then add the boiled dhal. add required amount of salt,turmeric powder, water and close the lid and allow it for one whistle.
on top add 1 tsp of ghee and little coriander leaves. this is very tasty. u can have it with steamed rice.
try and let me know the feedback.