Swallow skin is a kind of flaky food, also called meat swallow skin, which is made by beating lean pork into minced meat with a wooden stick and adding fine sweet potato powder. The finished swallow skin is white and fragrant, smooth and moist, crisp and refreshing. It can be cut into filaments for cooking or wrapped in a stuffing similar to wonton. It is a unique flavor snack in Fuzhou. The dried swallow skin can be preserved for a long time. It is a good gift for relatives and friends. The dried swallows' skins are white and slightly gray in color. After pruning and folding, they are put into paper bags slightly larger than playing cards. ?