Present handbook deals with the nutritional value of edible mushrooms as a non-conventional source of proteins with special reference to the common edible Oyster mushrooms. Pleurotus florida is one of the most popular agriculturally important Oyster mushrooms. Present book deals with the cultivation of this mushroom right from the development of inoculum to the harvesting of the final fruiting bodies by standard protocol. This handbook may prove beneficial to the farmers and those who are interested in mushroom culture. This handbook may also be used as a manual of Oyster mushroom farming.