Pickled onions are a delicious and tangy condiment made by soaking onions in a mixture of vinegar, water, and spices. This process not only preserves the onions but also enhances their flavor, making them a popular addition to various dishes. They can be used in salads, sandwiches, or as a topping for tacos, adding a crunchy texture and a burst of acidity. The pickling process can vary, with some recipes including sugar for sweetness or different spices like garlic and peppercorns for added depth. Whether you prefer them mild or spicy, pickled onions are a versatile ingredient that can elevate any meal.