Take all the dals on a plate and remove any impurities such as small stones or sticks, if any.
Add moong dal, urad dal and rice(if adding) in a bowl and wash well 2-3 times till water runs clear.
Soak in about 2 1/2 cups of water for 6-8 hours. After soaking, each grain will swell up.
After soaking time is over, drain out the water into another container and keep aside to use while grinding, if needed.
Add moong dal mix, green chilies, ginger, curry leaves to the mixer jar and run the mixer for a few seconds.
Add 1/4 th cup water (from soaked water) and grind again. Grind till you get a smooth batter. Add water only as much is needed.
When the batter is ground to a fine consistency, take out into a large bowl.
Add salt, jeera, hing to the batter and mix well. Adai – yadni, moong dal dosa batter is ready.
You may make adai immediately after grinding.
You may ferment it for 2-4 hours if you wish. But fermentation is not a must.
Add chopped dhania(coriander) leaves to the batter. Mix well.