Premade chaat masala is readily available in Indian stores and online, though I prefer making my own. It's a great zesty seasoning salt that is used in all chaats. It's also great for making raita, in Indian salads and as a seasoning in other foods, such as avocado toast and guacamole. Breadcrumbs are not traditionally used in aloo tikki, but when added to the potatoes it is much easier to form the patties. Dredging in the crumbs also gives them a nice crunch with pan frying.