Onion
common onion, is a vegetable. This particular species is the most extensively produced species of the genus of Allium . The onion plant is usually a biennial [...] perennial plant. When cultivated however, the plant is mostly handled as an annual and harvested at the end of its first production season. Onions are popular [...] therefore cultivated and used for cooking all around the world. Their flesh is pungent when chopped, because it contains particular chemical elements that