Biology:Yellow onion
| Yellow onion | |
|---|---|
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. It is yellow-white inside, with a brown papery exterior.
The yellow onion is higher in sulphur content than the white onion, which gives it a stronger, more complex flavour.[3][4]
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,[5] grown between spring and fall, and then stored for the rest of the year.[5] They are the most commonly grown onions in northern Europe,[2] and make up 90% of onions grown in the United States.[5] 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.[5]
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.[3] They can become sticky and sweet when caramelized.[5]
References
- ↑ 1.0 1.1 Mogren, Lars M. Quercetin content in yellow onion (Allium cepa L.) (Thesis). Retrieved 1 February 2017.
- ↑ 2.0 2.1 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.
- ↑ 3.0 3.1 Mower, Chris (30 March 2009). "The Difference between Yellow, White, and Red Onions". thecookingdish.com. https://thecookingdish.com/0330/the-difference-between-yellow-onions-white-onions-and-red-onions/.
- ↑ "Role of Sulfur in Onion Production". yara.us. http://www.yara.us/agriculture/crops/onion/key-facts/role-of-sulfur/.
- ↑ 5.0 5.1 5.2 5.3 5.4 Rothman, Lauren (June 2014). "A Beginner's Guide to Onions". seriouseats.com. http://www.seriouseats.com/2014/06/differences-between-onions-yellow-red-vidalia-what-are-ramps-shallots-how-to-cook-with-onions-guide.html.
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