Take all the grinding ingredients in a blender and add water. Grind into a smooth paste.

Now take drumstick, brinjal, tomato in a kadai and add some water.

Add in salt, turmeric and tamarind and mix well. Cover and cook this for 10 mins.

Add in the ground masala and mix well. Add water if needed.

Once it reaches to a boil. Set the flame to simmer and let it cook for 5 to 8 mins.

Now add in the sardine pieces and simmer for 10 more mins.

Throw in a handful of curry leaves and mix well. Let it simmer for 2 more mins.

Now switch off the flame and let it sit covered till ready to eat.

Serve with hot rice.