Star anise, also known as big fennel, commonly known as aniseed, is the fruit of the Magnoliaceae plant star anise. It is as big as money and splits into eight petals, so the name star anise is also a common condiment in the family. According to measurement, it contains more volatile oil, the main component is anisole, accounting for about 80% to 90%, and a small amount of anisaldehyde, anisaldehyde, anisinone, pinene, phellandrene, limonene and other ingredients. Some illegal vendors in the market pretend to be star anise with the fruit of Mangcao. Ingestion will cause serious consequences, so you must carefully distinguish the authenticity when using it.