Shiitake (Lentinula edodes) is known to many as a culinary mushroom. It is also growing increasingly popular as a functional mushroom. We grow it in sustainably harvested, PEFC/FSC certified birch. To make our potent NordRelease^® shiitake extract, we use only the fruiting bodies of the mushrooms, no mycelium. Shiitake is extracted with NordRelease^® technology. With this innovative extraction method our aim is to maximise the bioavailability of the compounds of interest found in shiitake.