February 20, 2009
As you open the door after coming in from a hard day at the office, you are greeted the with the aroma of freshly baked bread. It is a cold ...
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Onion is a term used for many plants in the genus ''Allium''. They are known by the common name "onion" but, used without qualifiers, it usually refers to ''Allium cepa''.Eric Block, "Garlic and Other Alliums: The Lore and the Science" (Cambridge: Royal Society of Chemistry, 2010), p. 3 ''Allium cepa'' is also known as the "garden onion" or "bulb" onion. It is grown underground by the plant as a vertical shoot that is used for food storage, leading to the possibility of confusion with a tuber, which it is not. ''Allium cepa'' is known only in cultivation, but related wild species occur in Central Asia. The most closely-related species include ''Allium vavilovii'' Popov & Vved. and ''Allium asarense'' R.M. Fritsch & Matin from Iran.Grubben, G.J.H. & Denton, O.A. (2004) Plant Resources of Tropical Africa 2. Vegetables. PROTA Foundation, Wageningen; Backhuys, Leiden; CTA, Wageningen. However Zohary and Hopf warn that "there are doubts whether the ''vavilovii'' collections tested represent genuine wild material or only feral derivatives of the crop."Daniel Zohary and Maria Hopf, ''Domestication of plants in the Old World'', third edition (Oxford: University Press, 2000), p. 198
The onion is a universal bulb crop packed with flavor and nutrition. Onions are used raw and cooked to flavor everything from meat to salads to staples like rice. When raw they have a strong aftertaste, but cooking removes this.
They are available fresh, powdered, pickled and in dried flakes. There are green, white and red varieties which range in flavor from sweet and mild to spicy and pungent.
Onions are also used in homeopathy for the treatment of asthma, bronchitis and ear aches.
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