Wash and soak rice and dal separately overnight

Wash well with plenty of water and drain it

Grind dal to a very fine paste, with help of coconut milk

Grind rice till fine grains are left (like very fine semolina), with help of coconut milk

Mix both rice and dal together after grinding.

Mix yeast with sugar and 1 1/2 tsp warm water

Allow to stand for 10 minutes, till it rises

Mix dal and rice, add to it salt and yeast and beat well

Add a little coconut milk if necessary, the batter should be fairly thick

Cover and keep aside for 7-8 hours, undisturbed

Spoon batter onto an idli stand

Heat water in idli cooker, and place stand in

Heat till the sannas are fluffy, approx 20-25 minutes

Serve hot