At present, there are many illegal vendors who add big cigarette shells to food, so we must pay attention to them.

Poppy is a plant that produces opium. It is well known that heroin is extracted from poppy fruit. Poppy shell (commonly known as big tobacco shell) is the dry shell of poppy fruit after drying and ripening. Poppy shell contains many alkaloids such as morphine, codeine, papaverine, thebaine and narcotine, among which morphine, codeine and papaverine are the main components, and morphine is the most important substance.

Poppy shell can enhance flavor and umami taste, and make meat taste more delicious. However, because it contains alkaloids harmful to human body, Chinese laws explicitly prohibit the addition of poppy shells to food.