Wash and soak kala chana overnight. Next day in a pressure cooker add mustard oil, jeera seeds, Garlic & ginger, onions, salt, haldi, redchilli, garam masala, black pepper & cloves, black cardamom, bay leaf and dalchini. Pressure cook it on medium-high flame for 15 min and then on medium heat for 30 minutes approx. Now open the cooker and check it. If chana is done then cook the onions till all the water evaporates and they arm brown. Now add tomatoes and cook till it she