Ash Beans are one of unique snacks in Lanzhou. They are porridge-like food made of ash beans. Add some sugar while eating it and the flavor is unique. The way to make them is to wash the beans before boiling them in water with edible alkali, and then simmer slowly. Put in some dates when appropriate. When they are done, the beans are soft, the soup is pasty, and the jujubes sweet. They are refreshing and rich in nutrition. In summer they can relieve heat when eaten cold; in winter they are nourishing when eaten hot.