Casserole. According to public information, Guangdong people use casserole to make soup, and casserole is a kind of cooker. Traditional casserole is a ceramic product made of raw materials that are not easy to transfer heat, such as seasonable, feldspar and clay. Fired at high temperature, it has the characteristics of air permeability, adsorption, uniform heat transfer and slow heat dissipation. The recipes that depend on casserole include casserole chicken, casserole tofu, casserole fish head and so on.