This curry was prepared by my husband's friend chakkravarthi's house.We use fully grown drumstick.But benkali friend's prefer only tender drumstick that is rope like time[thiri thiriyai irukkum pozhuthu] pluck them and use them.
when we were in Idukki I through drumstick which was very much grown.That seeds grow as very big tree in two years and yielding many many drumsticks which supplied most of the family living in the quaters.

tender drumstick 1" cut pieces 4 cups
tender sarkkarai puzhani tender stem cut 1" pieces 4 cups
the leaves in the stem may also taken.
turmaric powder
salt
coconut grated 1 cup
jeera 1tsp
green chilli 2
mustard seeds 1 tsp
curry leave
panchputan 1 tsp

Grind all from coconut to mustard seeds keep aside.
Take a kadai pore oil when hot put panch pudan when crackled add cut pieces of vegitables,turmaric and salt one cup water.Cook until the vegitables become tender.Add the coconut masala let the curry to simmer.Add curry leave enjoy with rice roti etc.,