1. Gray brown 2. typical shiitake fungus flavor 3. free flowing without impurities 1. Characteristics:water ... . puffed food, noodle product, biscuit, seasoning, soup.3. processing technique:shiitake funfus→washing→boiling→grinding→spray dried→testing→packing→final product4 ... :Normal temperature, away from light, seals. Shelf life: 24 months shiitake mushroom powder