In a large mixing bowl, add your boiled, mashed potatoes, green chili, haldi, red chili powder, amchur powder, cumin powder, coriander powder, salt, bread crumbs and corn starch
Mix everything thoroughly using your hands to make sure the potatoes get fully coated with all the spices, then add in fresh chopped coriander and mix again
Once your potato mixture has turned to a slight dough consistency, separate into 12 small balls. Oil the palms of your hands to help make this easier and gently flatten each ball between the palms of your hands so it looks like a small patty
In a medium sized pan, heat the oil on medium high heat for a shallow fry. Once the oil is hot, start to fry 4-5 aloo tikis at a time and transfer them to a plate lined with a paper towel to drain the excess oil
While the aloo tikis are frying, you can butter up the rolls and heat them on a pan or griddle for 2-3 minutes to get them slightly toasted before assembling your slider