Materials: wheat straw in the north, paddy straw in the east and south, sugarcane bagasse and maize or jowar stalks for milky, sawdust of broadleaf trees such as mango, poplar or oak for shiitake, two-year-old farmyard manure and loam for casing. Straw must be fresh, dry and never rained on.
Skill rises by species. Oyster first: no casing, no compost. Then milky, which adds casing, or paddy straw, which adds speed. Button adds composting and cold. Shiitake blocks add sterile filling and a 60 to 80 day wait.