From 100% Fruiting Bodies - Dual Extract Beta-Glucan Rich Polysaccharides 50% Shiitake mushrooms are one of the most popular mushrooms worldwide. They are appreciated for their rich, savory flavour and varied health benefits. We cultivate our organic shiitake mushrooms on wood- rich substrate and extract solely from the fruiting bodies creating a potent and high-quality extract that is rich in bio-active components.