Soak urad daal and meethi seed for 7 to 8 hours and set aside. At the same time wash idli rava and soak that too in water

In the evening drain out all the water from urad daal. Soak poha for 5 to 10 minutes. Drain the water. Now put daal and poha in a mixie jar and grind to fine paste by adding little water

Drain the water from rava and add the urad daal paste and give a good mix. Place the mixture in warm place. Let it ferment overnight

In the morning add salt and if desired add little water. Mix it slightly. Brush some oil on the idli maker plates. Now pour the batter and steam it for 12 to 13 mins. Hot idlis are ready to eat.