soak the urad dal in enough water for 4-5 hours.

drain the water from the urad dal and grind adding required water.

grind to a smooth fluffy batter.

pour into a deep bowl.

rinse the idli rava till the water runs clear of the starch. rinse atleast 3-4 times.

drain the water well from idli rava by squeezing excess water from idli rava.

mix the squeezed idli rava to the batter well.

always mix the batter with your hand to make sure there are no lumps in the batter.

make sure there are enough space for batter to raise when fermented.

cover and ferment in warm place for atleast 6 - 8 hours. see notes section for tips n fermentation.

you can see the batter has raised slightly indicating its well fermented.

mix the batter slightly and add salt to taste.

brush idli moulds with oil.

pour the batter in the idli moulds.

place the idli stand in the steamer containing with some boiling water.

cover with a lid and steam the idlis for 10 minutes.

serve hot the steaming idlis with chutney and sambar along with masala chai.