Generally the boss will roll the pie, or fold it in half, or cut it in half after rolling it into a long strip, and then put it into a cardboard box. The carton is usually used for takeout delivery or carryout packing, and is better sealed to prevent the pies from falling out.
Of course, most of the owners of the pie stalls in order to save costs, is to choose to put into a paper bag, one is the paper bag can be printed on their own stall name or address, to deepen the customer's impression of the pie stall, the next time you want to eat can be followed by the address to come over to consume. The second reason is that the paper bag is more convenient to take, and the cost of production is much lower than the cost of making cartons, so the paper bag pie method is more popular.