How about making tea?

Well-cooked tea can make the nutrients in tea precipitate faster and more. Of course, for green tea, it will destroy chlorophyll and affect the color view, but for tea, it is more mellow and tastes better.

Tea is not afraid of boiling, but of soaking for a long time. The so-called' bad overnight tea' comes from this. This is because quite a few tea leaves have high lead content. These lead components come from 1, because they are planted near the expressway, and the daily absorbed air contains lead components in automobile exhaust; 2. The planted soil contains more lead. If these tea leaves are brewed for a short time, less lead will be dissolved, and most lead will be dissolved after a long time. Lead will accumulate in human body, which is harmful to human health.