A pop-up shop exclusively selling crisp sandwiches - believed to be the first such shop in the world - sold out within two hours of opening its doors.According to its owners, Simply Crispy in Belfast experienced "overwhelming" demand for cheese and onion baps, with queues snaking out of the door and into the street as lunchtime approached.Customers can choose their bread and crisp flavour, and can opt to add cheese or ham to their sandwich, which is served with tomato soup and chips. It costs around £3 for a meal.
