The brown onion or yellow onion (''

Allium cepa An onion (''Allium cepa'' L., from Latin ''cepa'' meaning "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus ''Allium''. The shallot is a botanical variety of the onion ...

'' L.) is a variety of dry

onion An onion (''Allium cepa'' L., from Latin ''cepa'' meaning "onion"), also known as the bulb onion or common onion, is a vegetable that is the most widely cultivated species of the genus ''Allium''. The shallot is a botanical variety of the onion ...

with a strong flavour. They have a greenish-white, light yellow, or white inside; its layers of papery skin have a yellow-brown or pale golden colour. It is higher in sulphur content than the

white onion White onion or ''Allium cepa'' (“sweet onion”) 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 ...

, which gives it a stronger, more complex flavour. A dozen varieties of yellow onion are grown, following the time of year. They vary in nutritional content, but they do contain

quercetin Quercetin is a plant flavonol from the flavonoid group of polyphenols. It is found in many fruits, vegetables, leaves, seeds, and grains; capers, red onions, and kale are common foods containing appreciable amounts of it. It has a bitter flavor a ...

flavonol Flavonols are a class of flavonoids that have the 3-hydroxyflavone backbone (IUPAC name : 3-hydroxy-2-phenylchromen-4-one). Their diversity stems from the different positions of the phenolic -OH groups. They are distinct from flavanols (with "a ...

). Yellow onions are typically available throughout the year, grown between spring and fall, and then stored for the rest of the year. It is the most commonly grown onion in northern Europe, and it makes up 90% of onions grown in the United States. 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 A refrigerator, colloquially fridge, is a commercial and home appliance consisting of a thermally insulated compartment and a heat pump (mechanical, electronic or chemical) that transfers heat from its inside to its external environment so th ...

. Cut or peeled onions also need to be stored in plastic in the refrigerator, but they will last only a few days. They have a rich onion taste and are fit for dishes such as

French onion soup French onion soup (French: ''soupe à l’oignon'' ) is a soup usually based on meat stock and onions, and often served gratinéed with croutons or a larger piece of bread covered with cheese floating on top. Ancient in origin, the dish underwe ...

, other soups, stews and braises, sautéed dishes, and

shish kebab Shish kebab is a popular meal of skewered and grilled cubes of meat. It can be found in Mediterranean cuisine and is similar to or synonymous with dishes called shashlik and khorovats, found in the Caucasus region. It is one of the many types ...

s. They can become sticky and sweet when

caramelized Caramelization is a process of browning of sugar used extensively in cooking for the resulting sweet nutty flavor and brown color. The brown colors are produced by three groups of polymers: caramelans (C24H36O18), caramelens (C36H50O25), and c ...

References

Onion cultivars {{Vegetable-stub ms:Bawang besar