White Onion

The white onion, a culinary staple, is known for its sharp, pungent flavor and crisp texture. Its papery, white skin encases a bulb that ranges from bright white to slightly translucent. Often used as a base for many dishes, the white onion provides a strong, clean onion flavor that mellows when cooked. For those looking for a readily available and versatile cooking onion, the white onion is an excellent choice. It's commonly used in dishes where a bold onion flavor is desired, or when a milder flavor is achieved through cooking. When shopping for white onions, choose firm, heavy bulbs with dry, papery skins.

What sets the white onion apart from its cousins is the way its flavor behaves. Raw, it's assertive and slightly peppery with a clean, almost grassy bite that doesn't linger the way a red onion's can. That's exactly why it's the onion of choice in Mexican cooking, where it's finely diced over tacos, stirred into pico de gallo, or folded into ceviche. Give it heat, though, and that sharpness softens into a gentle, savory sweetness, which makes it just as at home simmering in a pot of soup as it is scattered raw over a plate of carnitas.

It's one of the most flexible members of the onion family, sitting somewhere between the punch of a raw scallion and the mellow depth of a slow-cooked yellow onion. If a recipe simply calls for "an onion" and you have a white one on hand, you can almost always use it without a second thought. Its crisp texture also holds up beautifully to quick cooking, so it stays juicy in a stir-fry rather than collapsing into mush.