Chatang is Tianjin's traditional snack. It is made of baked millet and glutinous millet flour. The soup is made by pouring boiling water to the mixed flour and then add sugar or brown sugar.

The way chatang being served at stalls is as attractive as the soup itself. The water is boiled in a big copper pot whose spout is usually fashioned into a dragon's head. While making the soup, the skilled chatang maker holds several bowls in one hand and pours the boiling water into them from quite a distance.