This Organic Maitake supplement carefully combines the best of Maitake mushroom for optimal benefits. 90% = Full-spectrum biomass of mycelium and young fruiting bodies grown on organic  brown rice under nature-identical conditions to provide a  higher yield of a wide range of key active nutrients. 10% = Hot water extraction of the mature fruiting body to provide a superior level of bio-available beta glucans and more specific nutrients. Maitake ‘The Dancing Mushroom’ is traditionally regarded as the mushroom for a healthy immune system.