Just like yellow onions, pickle onions also have a paper-thin skin that covers them. However, their inner layers offer a stark contrast to their outer appearance. When you slice or bite into a pickled onion, you'll find that the petals or layers have an almost translucent white color. This translucency is a result of the pickling process, which involves soaking the onions in a vinegar-based brine solution.
One of the notable characteristics of pickled onions is the color of their juice. As you mentioned, the juice of pickled onions often has a light tint of grayish-pink. This tint is a result of the interaction between the onions and the vinegar in the pickling solution. It not only adds a unique visual element to dishes but also contributes to the tangy and slightly sweet flavor that pickled onions are known for.
Pickled onions are a popular condiment and garnish, adding a burst of flavor and crunch to a variety of dishes. They are commonly used in salads, sandwiches, and as a side dish. The pickling process not only preserves the onions but also imparts a zesty, tangy taste that complements a wide range of savory foods. Additionally, the vibrant pinkish hue of pickled onions can make them an attractive and appetizing addition to your plate.