Hunyuan jelly has a history of hundreds of years and is a special snack in Hunyuan County, Datong City. Hunyuan jelly is made of potato starch, mixed with an appropriate amount of alum, stirred into a paste, boiled on the fire, cooled and poured out. Add lotus beans, dried tofu, chili oil, green onion, garlic, coriander and other seasonings before eating. The cool pink color is clear, smooth, tender and refreshing.