The article highlights a significant advancement in mushroom production technology by the Chungbuk Agricultural Research and Extension Services in collaboration with the Rural Development Administration and the Korea Mushroom Spawn Association. The team has developed a 'complete medium' system for shiitake mushroom cultivation, which includes a ready-to-use, bagged culture medium made of oak and pine sawdust and green onion. This innovation, four years in the making, promises to reduce incubation days by 12 and boost yield by 6%, thereby offering a route to lower operating costs and increase farm income. The product has been exported to Vietnam for further testing, marking a potential breakthrough in the mushroom industry, particularly for export markets.