First, choose brands with complete quality standards, certificates and electrical parameters. And local after-sales service outlets.

Second, look at the capacity: choose the appropriate capacity according to your family population.

≥ 1L: suitable for 1-2 people to cook soup, stew soup and tonify.

2l ~ 3l: Suitable for families with 3-5 people.

4l ~ 6l: Suitable for families with more than 5 people, and can also be used for cooking ginger vinegar in southern families.

≥6L: Suitable for families with more than 8 people or small enterprises.

Third, look at the purple sand liner. Choose products with smooth lining surface and no cracks and trachoma. Trachoma refers to the small white gray spots in the eyeliner. If there is trachoma, the small pores may become larger after long-term use, resulting in the formation of small pores in the liner, which will leak after a period of use.

Fourth, listen to the voice of the liner. Tap the purple sand liner to see if the tapping sound is crisp. If the sound is loud, it means that the liner may not ignite for a long time, and the density is low, which may easily lead to rupture. There is also to see if there are small pores outside the casserole. Small pores are not good, and they often leak easily when used.

5. Look at the color of the lining. The darker the color, the more purple sand there is in the tank.

Sixth, look at the lid. First, see if there are air holes on the surface of the cover. This hole is to help the earthen pot discharge steam during cooking and avoid overflowing during cooking. The second is to see the degree of fit between the lid and the body. If the lid can be rotated by gently moving it, it shows that the gas around the lid is easy to evaporate when cooking soup if the lid and the pot are not well fitted.