Actually, it is said in Japanese history books how the reason the Mandarin aristocracy of period were so healthy is that they had access to and regularly ate Red Reishi.
If you only want to retail it to relatives, friends and neighbors you are able do which. https://deadreckoninggame.com/index.php/How_To_Plant_Mushrooms_-_Increase_Your_Own_Oyster_Mushrooms_Indoors