Cut drumstick into long pieces that you have desired.
Boil moong dal with tomato, turmeric, sambhar powder and after it i s half done add drumstick and salt. (If you are comfortable with a pressure cooking, just add everything in a pressure cooker with just enough water and cook up to 2 whistles)
Grind coconut and rice flour with little water and add to the cooked drumstick, moong mixture and give a boil. Remove from fire.
Season with the items under `to temper` table and brown the onions nicely and mix well and serve with rice!