Chop the shark, eel or fresh-water fish into mashes, mix them with yam flour. The whole mixture can be used as cover. Take lean pork or shrimp as the stuffing. Pinch it into the shape of ball. The food is one of the flavor snacks with Fuzhou characteristic with thin and even cover, white and bright color, and it tastes slippery and crisp with the soup fatty but not creasy.