Organically grown Reishi (Ganaderma Lucidum), partially sun dried to increase the vitamin D content then low temperature dried. Each pack contains between 25-30 grams of Reishi slices producing 10 cups of tea. Simply add the slices to 10 cups of boiling water and simmer for a min. of 4-6 hours. Reishi mushroom (know as "the mushroom of immortality") has been used as an immune system enhancement supplement for thousands of years. There are many scientific studies demonstrating it's efficacy in reducing symptoms related to Diabetes, Hypertension & Heart Disease. Taken on a daily basis, Reishi is a wonderful addition to a healthy living regime. Also available in a 3 month bulk pack @ 75$. Check our other postings for fresh or dried Lions Mane (Hericum Erinaceus) known for it's memory enhancement or Brown Oysters gourmet mushrooms.