Yellow onion

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Yellow onion
Onion on White.JPG
Yellow Onion
Genus Allium
Species Allium cepa

The yellow onion or brown onion ( Allium cepa L. [1] [2] ) is a variety of dry onion with a strong flavour. They have a greenish-white, [3] light yellow, [4] or white inside; [5] its layers of papery skin have a yellow-brown or pale golden colour. [3] [4]

It is higher in sulphur content than the white onion, which gives it a stronger, more complex flavour. [5] [6]

A dozen varieties of yellow onion are grown, following the time of year. They vary in nutritional content, but they do contain quercetin (a flavonol). [1]

Yellow onions are typically available throughout the year, [4] grown between spring and fall, and then stored for the rest of the year. [4] It is the most commonly grown onion in northern Europe, [2] and it makes up 90% of onions grown in the United States. [4] They should be stored at cool room temperature in a dark place. Longer-term storage requires them to be wrapped in paper and placed in a refrigerator. Cut or peeled onions also need to be stored in plastic in the refrigerator, but they will last only a few days. [4]

They have a rich onion taste and are fit for dishes such as French onion soup, other soups, stews and braises, sautéed dishes, and shish kebabs. [5] They can become sticky and sweet when caramelized. [4]

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Allium fistulosum, the Welsh onion, also commonly called bunching onion, long green onion, Japanese bunching onion, and spring onion, is a species of perennial plant, often considered to be a kind of scallion.

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<span class="mw-page-title-main">White onion</span> Onion cultivar

White onion or Allium cepa are a cultivar of dry onion which have a distinct light and mild flavour profile. Much like red onions, they have a high sugar and low sulphur content, and thus have a relatively short shelf life. White onions are used in a variety of dishes, such as those of Mexican and European origin. Their uses in dishes often relate to their mild nature, they are often included in dishes to provide a light, fresh and sour taste to dishes and are often added uncooked to dishes such as salads.

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References

  1. 1 2 Mogren, Lars M. Quercetin content in yellow onion (Allium cepa L.) (Thesis). Retrieved 1 February 2017.
  2. 1 2 Mogren, L.; Gertsson, U.; Olsson, M. E. (2008). "Effect of Cultivation Factors on Flavonoid Content in Yellow Onion (Allium Cepa L.)". Acta Horticulturae. 765 (765): 191–196. doi:10.17660/ActaHortic.2008.765.23.
  3. 1 2 "Glossary". bbcgoodfood.com. Retrieved 1 February 2017.
  4. 1 2 3 4 5 6 7 Rothman, Lauren (June 2014). "A Beginner's Guide to Onions". seriouseats.com. Retrieved 1 February 2017.
  5. 1 2 3 Mower, Chris (30 March 2009). "The Difference between Yellow, White, and Red Onions". thecookingdish.com.
  6. "Role of Sulfur in Onion Production". yara.us. Retrieved 1 February 2017.