Combine the vegetables into a pressure cooker with the turmeric powder and salt with little water. Cook for a whistle and switch off.

Put all the ingredients under "for paste" into a grinder and grind into a smooth paste, adding very little water.

Heat oil in a saucepan, and splutter the mustard seeds. Fry the curry leaves.

Add the paste and cook for a few minutes, till raw smell is gone. Sprinkle water if sticking to the bottom.

Add the tomatoes and give it a good mix. Cook till the tomatoes are well done and smashed.

Add in the cooked vegetables along with the liquid and bring to a boil. Adjust seasoning and serve hot with rice or chapathis.