Moong daal dosa(Pesarattu)

I guess this is a Andhra dish, its called Pesarattu(I got it from a Tamil friend). I got this in some book. Tried it and it came out very nice. I prefer this with tomato chutney.
Ingredients:
Rice 1 cup
Moong daal 1 cup
Onion 1 large
Ginger 2” piece
Green chillies 2-3
Coriander leaves 2-3 strands
Cumin seeds (Jeera) 1 tea spn
Method:
Soak rice and moong daal overnight. Grind with ginger, chillies, coriander leaves and salt. Add finely chopped onion and jeera.
Make dosa. Serve hot with tomato chutney.
Serves : 5
Preparation time : 10min