There are two main classifications of onion-green onions (also called scallions) and dry onions, which are simply mature onions with a juicy flesh covered with dry, papery skin.
Onions are used in a variety of dishes and rank sixth among the world's leading vegetable crops. Onions contain quercetin, a flavonoid (one category of antioxidant compounds). Antioxidants are compounds that help delay or slow the oxidative damage to cells and tissue of the body.
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