pav bhaji is an iconic dish from Mumbai and hugely popular all over India. pav means bread rolls. bhaji is the Marathi word for vegetables or a vegetable-based dish (dry or gravy). since both the bhaji (vegetable gravy) and pav are served together, hence the name pav bhaji
cook vegetables for 5 to 6 whistles or for about 12 minutes on mediums flame. You can even steam or cook the veggies in a pan. Use Amul butter or any brand of butter - salted or unsalted. When the tomatoes have softened, then add ½ cup finely chopped capsicums (green bell pepper) Sauté for 2 to 3 minutes. If the mixture starts sticking to the pan, then you can sprinkle some water and mix well.
You don't need to cook the capsicums till very soft. Add all of the stock or water from the pressure cooker in which the veggies were cooked. Mix very well. Add salt, pav bhaji masala, red chili powder or butter if required. Let it simmer for 8 to 10 minutes.