Grind together coconut, cumin seed and garlic.
Remove the skin of drumsticks and cut into small pieces and cut tomatoes and onions into long, thin pieces.
Heat about 300 ml of water in a vessel.
Add drumsticks, tomatoes and onions along with salt, turmeric, chilly powder, few curry leaves and chopped green chillies.
Add more water, if reqd.
:- The vegetables should be completely immersed in water.
Cover the pan with a lid and allow it to boil.
Cook on a low flame, till vegs. are well cooked.
Add the ground mixture and cook, till it is thick without too much water, but enough water for gravy.
Allow it to cool.
Add curd and stir well.
-At the end it should have enough gravy, not too thick, not too loose-just like moru curry.
When it`s warm through, remove from fire.
:- Do not boil it.
Add more salt, if needed.
Heat oil in a pan or a kadai.
Splutter mustard seeds.
Add chopped small onion and curry leaves and saute.
Add the above seasoning into the curry and mix well.
:- Serve with rice.
:- You can make this curry without drumsticks, or by using potatoes instead of drumsticks.
:- If u are using potatoes, cut potatoes into thin long pieces and cook along with tomatoes.