Reishi is a medicinal mushroom that is an immune booster, anti-inflammatory, ant-viral and a cardio tonic. It can be used as a tea or put into soups, rice, stews... and pulled out at the end. It is too tough to eat but should be simmered for at least 1/2 hour to extract its medicinal properties. The 1/2 Lb of dried Reishi mushrooms comes with instructions for use and recipe ideas. They can be stored for up to 1 year.