Boil the potatoes and keep it aside. Heat oil in a pan, crackle mustard seeds jeera,curry leaves, now add chopped chillis and onion and fry until they turn pinkish in colour.add salt, turmeric and mix it properly. Then add mashed potatoes mix properly,the masala will be hot so allow them to cool.

In a large bowl add 1 cup of roasted rava add 1 cup of curd. It is best to use slightly sour curd add some water and mix well. Keep the batter to soak for 30 mins. After 30 mins add eno pouch and give a stir. Grease the idli plates and switch on the steamer with enough water.pour 1 tbsp of idli batter into each impression.