If you have left over curds then definitely try this curry its good with rice. A little change from the usual dishes.
Take about 1/2 glass curd pour 1/2 glass water and make thick curd. Then grind coconut, green chilies and ginger and add it to butter milk.
Now take flat bottomed dish and add oil and add tempering this is very important for this dish. For tempering add 1/4 tsp of cumin and mustard seeds, 1 tsp of channa and urad dal and 6 curry leaves and 1 dry chili
Once they start to splutter add the masala added butter milk and keep for a minute and switch off. If you cook for long it will start curdling.
Garnish with coriander leaves and serve.