Pressure cook the tomatoes, onion, garlic, ginger, black pepper, cumin seeds, cardamom and salt for 2 whistles. Once it is done. Open the lid and cool it.

Grind it in a blender.

Heat cooker. Add 1 tbsp butter. Add all the vegetables. Saute it for minutes. Add tomato mixture in vegetables. Add little water and pressure cook for 1 whistles. Once it is done.