Add cut mangoes to the pan
Add 1/2 cup of water
Add salt and cook them in low flame for about 2-4 minutes ; turn off the stove
Let the cooked mangoes cool down a bit
Add little water and grind the coconut with cumin seeds and green chilli
In a wide vessel add ground paste, thick curd, 3/4 cup of water, turmeric powder, salt and sugar
Mix well with a whisk or electric beater; till everything blends well
Meanwhile cooked mangoes would have cooled
Add the curd mixture to cooked mangoes and turn on the stove in the lowest flame
Cook for 2-3 minutes in low flame and switch off
In a separate pan add oil and when the oil becomes hot add the ingredients under "To temper" and let it splutter. Add the seasoning to the kuzhambu and mix well. Serve with rice