Soak the moong dal in water for about half an hour. Drain and grind with ginger, garlic, onion to a smooth batter. Add all the seasonings.
Heat a tawa and grease it. Pour a ladle of batter on the tawa and spread round to make a thin dosa.
Drizzle a little ghee over the cheela and cook on medium heat till one side is done. Flip over carefully, drizzle a little ghee and cook till the other side is done too.
Serve with chutneys of your choice.