After taking the new ceramic cup home, rinse it with cool water first, and then brush it inside and outside with dishwashing detergent, and then rinse it thoroughly with cool water, and then boil some boiling water to wash the cup, and the lid should also follow the three steps. Then fill a cup of boiling water, wait for a moment, and then pour it out, so that the cup can be used safely. It is best to buy a ceramic cup with a pure white inner wall, so that no colored glaze is used, which is safer.
Rinse well with water and rub with salt. After washing, use hot water several times to use