The flavorful shiitake mushroom is native to Asia where it has been harvested wild from forestlands for centuries.
Commercial production was introduced in the 1930s first by inoculating select logs, and later by growing mushrooms on sterilized sawdust, which sped up production. As its taste and nutritional value become more and more known and desired in North America, shiitake mushrooms present another possible niche farm crop to consider.
Shiitake can be sold in a variety of ways, including as fresh mushrooms, dried mushrooms, pre-inoculated shiitake logs or sawdust blocks for backyard or tabletop shiitake mushroom growers and of course as value-added culinary products that contain the mushrooms. Even the resulting “mushroom compost” can be a valuable product. For actual spawn production, a sterile or at least very clean laboratory-type environment is preferable.
But the purchase of spawn is relatively inexpensive. Also, in some states, a certified kitchen is required to produce and sell value-added food products such as mushroom soup, but the production needs of the other shiitake products can usually be set up on a typical working farm.