Potato dumpling is a famous Han snack in Longnan, Gansu. Stir-up is a kind of home-cooked meal that has been circulating for a long time. Corn flour stir-up is the most common, and there are many forms such as buckwheat flour stir-up, potato, miscellaneous flour stir-up and so on. Stir-fried dumplings are often eaten in poverty, and now they have gradually developed into local famous snacks. Potato stir-fried dough is a famous local snack in Huating, which is refined from potato produced in Huating. The production method is as follows: firstly, the potato is cooked with clear water, peeled off, and hung on a table. When the temperature is only left, it is poured into a special wooden trough or mortar, and then it is slowly rubbed with a wooden hammer. When the potato becomes paste, it is slammed with a hammer until it becomes a shiny, tough and rubbery appearance. There are two ways to eat: hot food and cold food. Hot food, put it in the sauerkraut slurry and cook it slightly. Put it in a bowl with the sauerkraut slurry and mix it with salt and oil to eat. Cold food, put it into a bowl of vinegar soup with vinegar, garlic and chili pepper. Its unique flavor, smooth and fragrant taste, is an ideal choice for food health. It used to be a home-cooked snack for farmers, but now it has become one of the local specialty snacks that the public likes to eat.