Though they can be pungent and spicy, red onions are great for eating raw, bringing crunchiness and brightness to a variety of dishes. Besides, their flavor ranges from sweet to pungent depending on their age, particular variety or how much sulfur was in the growing soil or in the fertilizer used. As far as their nutritional benefits are concerned, Red onions have high polyphenol content, including a rich concentration of flavonoid polyphenols. They also provide a particularly large amount of quercetin which in turn provides antioxidant properties that are known to have preventative and curing properties related to cancer, heart and digestive illnesses. Now, if you wanted to unleash your culinary skills and use your Red onions, just use them in any recipe calling simply for onions. And remember to use them alongside a few other supporting ingredients as their bold flavor will generally dominate any dish they are in.