Grind coconut to form paste. Add green chillies, cumin seeds, turmeric into coarse mass (add water only if needed need)

Place the pan on flame. Add 1/4 cup of water. Add yam, drumstick to it. Let them boil for 7-8 minutes.

Add all other vegetables(except raw mango) with another 1/4 cup of water.

Spread the coconut mixture on the top. Add salt, curry leaves to it. Close the pan and let it cook for 10 minutes

Occasionally stir with back of the spoon. Don't break the vegetables.

Once the vegetables are 3/4 cooked, add 3-4 pieces of raw mangoes and cook for 3-5 minutes till water is almost drained still not dry.

Remove from flame and add 1/2 cup whisked curd. Stir it gently and transfer it to serving bowl

It can be served with rice,idli, dosa.