Bingfen began in the Ming and Qing Dynasties, and is generally considered to belong to the Sichuan cuisine system. The main raw material of ice powder is a plant, which has many names, such as ice powder tree and pseudophysalis. The turn of spring and summer is the season when ice powder trees bear fruit. The round fruits are hanging all over the branches. If you cut them with a knife, you will find dense ice powder seeds inside. Ice powder seeds contain a large amount of pectin, which can be turned into ice powder after solidification, making it a cheap and delicious ice powder. This is a picture of the plant pseudophysalis.