Soak the cashews in warm water for 10 minutes. Chop the onion and tomato finely and slit one green chilli. Cut tender drumsticks into finger length pieces. (The drumsticks I got were about 18 inches in length).
Heat 1 tbsp oil in a kadai. Splutter jeera and mustard seeds.
Add curry leaves, green chilli and chopped onion. Fry on medium heat till the onions brown.
Stir in ginger garlic paste. Fry for about 30 seconds.
Tip in chopped tomatoes and mix well. Cook on medium heat till the tomatoes soften and oil starts to ooze out. Mix in turmeric powder.
Add the drumsticks and fry for a minute. Add the soaked and drained cashews and fry for a minute or so.
Sprinkle jeera powder, dhania powder, salt and chilli powder. Mix all the ingredients together.
Pour a cup of water into the kadai and stir well. Cover with a lid and cook on medium heat for 10-15 minutes, stirring occasionally. Once the drumsticks are cooked and the gravy thickens to the desired consistency, turn off the gas.
Add 1 tbsp milk and gently mix to get a nice creamy gravy.
Serve Drumstick Kaju Masala with white rice.