- Mash potatoes properly. In mashed potatoes, add salt, black pepper, chaat masala, red chilli powder, breadcrumb, corn flour and mix well. Now take a small portion of potatoes and roll in hand to make finger shape. Prepare all fingers. Coat in bread crumbs Deep fry on medium to a high temperature until golden brown. Take out on kitchen paper. Serve with ketchup, chutney or mayonnaise.