Wash dal well. Take it in a pressure cooker, Cover with water. Pressure cook for 2 whistle, simmer for 15 mins. Turn off the heat and let the steam escape all by itself. Open the cooker and mash it little.
Heat oil or ghee in a pan, add in cumin and let it sizzle.
Now add in chilli, turmeric and garam masala powder. Saute for 10 sec.
Pour this into the dal and mix well.
Add in salt and sugar. Mix well. Add in coriander leaves and mix well.