Ceramics are similar to purple sand and contain trace elements beneficial to human body; In the process of long-term cooking, ceramic rice cookers will not react chemically with food at high temperature, but also decompose oil, which can dissolve greasy, crisp but not rotten, fresh but not greasy when stewing soup, and reduce cholesterol; However, compared with purple sand, ceramic materials are fired at a high temperature of 1300℃, with higher density and smooth and delicate surface. It is difficult for soup to penetrate into the liner material, thus avoiding the phenomenon of "cross-flavor". Ceramic electric stews are more noble, and they are the first choice for many stews, so they are regarded as "nobles" in electric stews.

At present, there are white porcelain, ceramics, red pottery and purple sand. At present, purple sand ceramics are very rare. And the price is also expensive.

It is generally recommended to use natural white porcelain, and many purple sands are fake purple sands. Red pottery ceramics may have odor absorption, leading to food odor.

White porcelain products are easy to clean and have good high temperature resistance.

In addition, white porcelain must pay attention to whether it is natural, because some businesses will add whitening or bleaching to make white porcelain look good. Generally, natural white porcelain is a little khaki.