For the gravy version, take a wok. Add in oil. Add in cumin seeds. Now, toss in onions, ginger garlic paste and the bell peppers. Roast them well in a low flame. Add salt, deghi mirch, garam masala, kasoori methi and toss well. Once the veggies are well roasted, add in tomato ketchup, chilli sauce, light soy sauce and dark soy sauce along with vinegar. Let the sauces simmer for 2 mins on low-medium heat.