Put the chopped leaves in a pressure cooker and give 3 whistles

Drain out the excess water and then put the boiled leaves in the mixer grinder along with onion, garlic and green chillies and make a thick paste

Now, take a pan and put mustard oil, nigella seeds, above paste, turmeric powder and sugar in it and saute it until it becomes dry.

Now, add salt to it and mix it well and it's now ready to serve with hot rice.