Onion

An underground bulb (Allium cepa) belonging to the lily family. Onions are native to Asia but are now grown throughout the world. They contain vitamin C and traces of other vitamins and minerals. The onion is edible at all stages of its development, from the green root to the mature bulb. Onions have two main classifications: green and dry (mature onions with a thin, papery skin covering). They can range in color from white to yellow to red. The types most often used in United States cuisine are the white and yellow globes and the green onion (scallion). Almost all types carry a strong flavor and aroma, and a crisp texture. Onions are used in the bakery in loaf breads, flatbreads, bagels, and other rolls.