"Most dried beans with bright green appearance come to act young by copper sulfate, which is not safe to eat!" Shopping malls (bought in supermarkets) are normally dehydrated and dried dried dried beans, which are dark green, black or yellow-green. Some processing enterprises soak dried beans with copper sulfate to make them shiny and bright green.

A lot of goods, just for a look! Of course, it is not excluded that individual businesses really have secrets, but there is no standard in this respect in our country, so they all show their magical powers. Therefore, for the sake of health, if you eat at home, you should not just "look good" @