My family has also used Sanyuan brand purple casserole for several years. I wanted to put away the fire, but later I cooked the soup in a pressure cooker. My family said that the taste was too bad and asked me to take it out. What else did I say? Eating a green vegetable is toxic these days, and it's okay to cook the soup in a pot for so many years. What are you afraid of? It's alarmist. It's right to think about it. Anyway, it's okay. The soup tastes good, so I will continue to use it.