Into a mixing bowl, add rice, whole moong, udad dal, tuvar dal and masoor dal. Add water and rinse well. Drain the water.
Add fresh water and keep this soaked for 4 to 6 hours or overnight.
Once the rice and lentils are well soaked, drain the water.
Add dry red chillies and asafoetida. Blend to a fine paste.
Add salt as per taste to the batter and mix well. Keep this aside until we make coconut chutney.
To make the chutney, blend fresh coconut, green chillies, roasted chana dal, garlic, tamarind and salt to a fine paste.
For the tempering, heat oil in a small pan.
Add mustard seeds, udad dal and curry leaves.
When they start spluttering, pour the tempering into the coconut chutney. Keep this chutney aside.
To make dosas, heat a pan. Drizzle some ghee or oil on the pan and wipe with a tisuue paper.
Pour a ladleful batter on the hot, greased pan.
Spread the batter in a circular motion to make dosas.
Drizzle ghee around the dosa and cook till it turns crispy.
Repeat the same with remaining batter.
Serve dosas with coconut chutney.