Food-tech start-ups have given a new meaning to finger food. Now you can not only eat but also order with your fingertips. In the convenience economy in which technology is disrupting every business, food delivery is no exception. In India, the rush began in 2014, when a host of start-ups decided to exploit the ease-of-ordering gravy train even as investors went about funding just about everyone. But the euphoria was short-lived. Once the money started drying up, so did the start-ups — the next two years saw two dozen mergers and acquisitions and several start-ups shutting shop.