In Zaozhuang, Shandong, porridge cooked with rice, millet, etc. is called porridge, and "porridge" specifically refers to the unique local soy milk-like breakfast food made from various raw materials such as glutinous rice and soybeans. . The general method is as follows: soak raw materials such as glutinous rice and soybeans for several hours, then grind them into a slurry with a machine or stone mill, add water and boil it.