Fry the mung dal in a kadai without oil till it turns brown. Clean thoroughly in water and let it dry. Grind it coarsely. Keep it aside.
Now separately grind red chilly with salt and later add the grated coconut, jeera, garlic, onion and grind thoroughly.
Add the grounded mung dal and curry leaves. Grind it again so that the ingredients mix well.
Chutney for idli Dosa is ready. It tastes good with rice too.