Oyster mushroom (Pleurotus ostreatus) and Shiitake mushroom both have a special reputation due to their beneficial impact on human health recognized by traditional Chinese medicine. Oyster mushroom used to be valued as treasure on the emperor’s court. It contains beta-glucans and vitamin B, D, C, K, proteins, sterols, certain fatty acids and trace elements of chrome, copper, iron, iodine, sodium, selenium and zinc. These elements are in amounts and ratios optimally suitable for human body. Oyster mushroom typically contains a high volume of fiber that helps to eliminate harmful substances from the body and improves bowel movements.