Red onions have a white interior flesh with a pale to bright maroon or pinkish papery skin that exudes a pungent scent and flavor as soon as peeled or cut. When compared to their white, brown, or yellow counterparts, red onions are pungent and peppery, but they're still delicious raw. They're fantastic in a variety of stir-fried, grilled, and roasted meals that call for a smoky, sweet onion flavor.