1. When purchasing Yingjing casserole, you should choose formal channels, such as large supermarkets and brand stores. These channels usually have quality assurance, which can guarantee the quality of the casserole sold.
2. When buying Yingjing casserole, you should check the product identification and instructions to understand the origin, material and use of the product. Pay special attention to check whether it is marked with the words "Yingjing Casserole" to ensure that the authentic Yingjing Casserole is purchased.