Answer: Mushrooms are fleshy, spore-bearing structures with a rounded cap on a central stalk. Mushrooms belong to a large group of organisms called fungi, all of which lack chlorophyll, the green substance that enables green plants to manufacture their own food through photosynthesis. Lacking chlorophyll, fungi obtain their food from decaying plant and animal remains. Some parasitic mushrooms obtain their food from living plants or animals.
Mushrooms are produced from an especially prepared material called spawn, which is filled with living mushroom spores. They are grown where the temperature can be kept between 55F and 65F degrees, provided with high humidity and controlled ventilation. Sunlight is not harmful to mushrooms but they are usually grown in the dark because it's easier and cheaper to control the temperature and humidity under these conditions. Cellars or especially constructed mushroom houses are generally used to grow mushrooms.
Information on growing Portabello mushrooms is available at the following website: http://www.mushroomcompany.com
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