Dried Japanese Shiitake mushroom. A hundred years after establishing our company establishment, we keep finding ways to produce high quality shiitake mushrooms. We use many gifts of nature, such as sunlight filtering through the trees or a clean water spring from Mt. Kirishima, in order to produce shiitake mushrooms which are planted into raw oak timbers. The shiitake mushrooms are ultimately harvested and desiccated using a traditional drying room called “Makimuro.” Please enjoy our shiitake mushrooms.