Pleurotus ostreatus, Pleurotus ostreatus, the pearl oyster mushroom or tree oyster mushroom, is a common edible mushroom. It was first cultivated in Germany as a subsistence measure during World War I and is now grown commercially around the world for food. It is related to the similarly cultivated king oyster mushroom

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Keywords: commercially, common, cultivated, edible, food, germany, grown, king, measure, mushroom, ostreatus, oyster, pearl, pleurotus, related, similarly, subsistence, tree, war, world