Frontier Coop, Mushroom Shitake Whole, 8 OzProduct Description Mushroom shitake whole of which only the button mushroom is cultivated more than the shiitake, which is prized by cooks and herbalists alike. Product Benefits Kosher. Ingredients Ingredients: Shiitake Mushroom. Suggestions Special Note Warnings Some individuals may be allergic to shiitake mushrooms. Symptoms can include skin rashes, itching, or respiratory discomfort. Discontinue use and seek medical attention if symptoms occur.