White Onions vs Yellow Onions
Onions, which are bulbs that grow underground, are a relative of the garlic family. They are grown around the world, but can be found especially in China and Australia. The United States, however also produces a significant amount of onions yearly.
White and Yellow onions are just two of the different varieties of onions in existence. Both have similar nutritional value, being good sources of vitamin C, iron and calcium. Apart from the white and yellow onions, there are the brown and red varieties as well. Each variety has its particular characteristics which make it particularly suited to a special dish.
Onions also have health benefits. It is said, for instance, that onions help women with osteoporosis, heart disease and diabetes. In some countries onions are considered healing aids used to treat skin and eye problems.
Yellow onions are the most common type, as they give good flavor to many different dishes. The color of the skin on yellow onions is not really yellow, but rather golden-brown. The high sulfur content in yellow onions is what causes watery eyes when cutting them. That same sulfur content also makes the yellow onion difficult to consume raw, however when cooked the sulfur taste and smell disappear.
Common meals that which include onions are: soups, stews, sautes, and even burgers. If a recipe is not specific about the type of onion to use, the yellow onion is generally used.
White onions are a milder variety and are used in dishes where the full onion flavor is not required. Depending on the farming technique, they can be white or off-white in color. They are most commonly used in Mexican cuisine for their texture and mild flavor. White onions have a higher water content than yellow or red ones, which means that they have a relatively shorter life span. White onions are typically not used to saute as this process gives them a sweet taste which doesn’t tend to work with main course dishes.
Both white and yellow onions are commonly substituted for each other in a number of dishes, but there are subtle differences between the two and some dishes require one or the other.
Summary

1. White and yellow onions are vegetables which are grown as bulbs for their flavor. Both are valuable sources of nutrition, mild in scent, and have layers of skin that can be peeled off.
2. Yellow onions are common in most types of cuisine, white onions are more commonly used in Mexican dishes.
3. Yellow onions have golden brown skin, while white onions are white or off-white in color. Yellow onions tend to have more flavor than their white counterparts, however they also have a stronger sulfur smell, white onions are mild and don’t smell as bad.

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