First of all take a wok or a pan and heat some butter in it..splutter cumin, put bay leaf, both types cardmum, cinamen stick, mace(javitri), black pepper corn dry red chilli and roast fo' 1 minute then add chopped onion, ginger, green chilli and stir fry till onion get translucent..add chopped tomatoes, cashew and cook till the rawness of tomatoes gone.. Flame off..let the mixture parcially cool down