Star anise is a spice that comes from the fruit of the star anise tree, Illicium verum, which is native to China and Vietnam. The fruit is star-shaped with 6-8 pointed sections, each containing a shiny brown seed. Star anise has a strong, licorice-like flavor and is commonly used in cooking, particularly in Chinese and Vietnamese cuisine.

Star anise is often used whole or ground, and is a common ingredient in spice blends such as Chinese five spice and Indian garam masala. It is used to flavor meats, soups, stews, and rice dishes, and is also used in desserts and baked goods.

In addition to its culinary uses, star anise has been used for its medicinal properties for centuries. It contains compounds that have antiviral, antibacterial, and anti-inflammatory properties, and has been used to treat a range of ailments, such as coughs, colds, and digestive issues. However, the medicinal use of star anise is not supported by modern medical research, and should not be used as a substitute for professional medical advice.

Star anise is also used in the production of the drug Tamiflu, which is used to treat influenza. However, it is important to note that star anise should not be used as a substitute for Tamiflu or other prescription medications without the advice of a healthcare professional.

Star anise can be stored in an airtight container in a cool, dark place for up to six months. However, caution should be exercised when consuming large amounts of star anise, as it contains compounds that can be toxic in high doses.