Heat 2 tablespoon ghee - add around 10 cashews fry until golden, remove to a bowl and set aside.
In the same ghee add 1 teaspoon mustard seeds let it splutter.
Now add 1/2 teaspoon urad dal and 1/2 teaspoon chana dal. Saute for few seconds. Add 1/4 teaspoon hing.
Add 1 teaspoon green chillies finely chopped, 1 teaspoon ginger finely chopped and 1 tablespoon curry leaves finely chopped. Saute until dals turn golden brown.
Add 2 tablespoon grated carrot. Saute for a minute until it shrinks.
Add 1 cup sooji (rava).
Saute for 3-5 mins.
Transfer this to a mixing bowl.
Add 1/2 cup curd and 3/4 cup water along with required salt.
Mix well to form a batter that is pourable but thick just like our idli batter consistency. Leave it undisturbed for 5 mins.
Now add 1 teaspoon eno fruit salt. If you don't have it then add 1/4 teaspoon cooking soda. It will start to bubble.
Mix gently, do not overmix for a long time. Adjust with water if the batter is too thick.
Now grease the idli mould with ghee, add fried cashews.
Pour the idli batter into the holes.
Get the idli steamer ready - Add enough water to the steamer and let it start to boil.
Add the idli plates to the steamer.
Close and cook covered for 10 -12 mins.
Check by inserting a toothpick in the center if it comes out clean then it is done. Switch off.
Remove the idli plates and let it rest for 5 mins. Now dip a spoon or laddle in water.
Remove using the laddle for easy demoulding. Remove the idlis and place it inside hot pack. Repeat to finish the batter.
Rava Idlis are ready!