Grind toor dal(1/2 cup),green chillies(4),tomato(1),garlic flakes(5),ginger(a small piece),pepper powder(2tspns) to a thick paste.
Cut sarson ke leaves(1 bunch) and saute in oil till the greens shrink in size.Now add the ground paste and fry for some time till the raw smell goes.Add salt, turmeric and hing and mix well.
Now add 3 cups of thick yoghurt to this and wait for it to boil. Add water if it is too thick.Dont keep this till it boils well. Just the first signs of boiling will do. Stir once.
Now temper with oil,mustard,chana dal,urad dal,red chillies(2),curry leaves.
Mor kozhambu is ready to be served.This goes well with rice or even chapatis , for those who like.