(Allium sepa)
White onion is a type of onion that has a pure white papery skin and a sweet, mild white flesh. They have a short shelf life, lasting up to 2 days, or if refrigerated, they can last up to a month
The white versions are somewhat sweeter and milder and cleaner in flavor, but don't store quite as well as yellow onions do.
White onions can be eaten raw, thinly sliced in salads, “pico de gallo” or other raw preparations.
White onions are a totally acceptable substitute for yellow, especially if you’re cooking them.