Quick-pickled red onions are a versatile culinary gem, offering a burst of crispness and tanginess to any meal. This straightforward preparation, requiring only about an hour of passive time, transforms ordinary red onions into a vibrant condiment. Their delightful crunch remains, while their initial sharp flavor mellows as they absorb the pickling liquid. The longer they marinate, the more profound their taste and brilliant their color become, establishing them as an indispensable make-ahead addition to your kitchen.
To prepare these zesty onions, thinly slice one red onion and place it in a jar. In a separate bowl, whisk together half a cup of apple cider vinegar, one tablespoon of granulated sugar, one and a half teaspoons of Diamond Crystal kosher salt (or three-quarters of a teaspoon of Morton kosher salt), and one cup of water until the sugar and salt have fully dissolved. Pour this brine over the sliced onions in the jar, seal it tightly, and allow it to sit at room temperature for approximately one hour. This brief marination is enough to achieve a lightly pickled onion with a pleasant, subtle sharpness. For optimal flavor development and a softer texture, you can warm the brine slightly before adding it to the onions. This accelerates the pickling process, making them ready to enjoy even faster.
Once prepared, these pickled red onions can be stored in their liquid within an airtight container in the refrigerator for up to two weeks. They are incredibly adaptable and can elevate a wide array of dishes. Consider incorporating them into tacos for a bright, acidic counterpoint, layering them onto breakfast sandwiches for an unexpected kick, or adding them to burgers, grain bowls, and salads to introduce a fresh, piquant note. They also pair wonderfully with roasted vegetables, providing a welcome acidity that cuts through richness.
Experimentation with the pickling liquid is encouraged. While apple cider vinegar is specified in the base recipe, various other vinegars like white wine, red wine, sherry, rice, or even plain white distilled vinegar can be used, either individually or in combination. To further personalize your pickled onions, consider infusing the brine with spices or aromatics. Whole black peppercorns, coriander seeds, bay leaves, garlic cloves, sliced chiles, or fresh herbs can all impart unique and delicious dimensions to the final product. For those new to slicing onions for pickling, a simple technique involves cutting the onion in half from root to stem, trimming the ends at an angle, removing the papery skins, and then slicing into long strips following the onion's natural curve. This method ensures uniform pieces that pickle evenly.
These pickled red onions serve as an excellent, easy-to-prepare condiment that promises to brighten and enhance your everyday meals with their tangy, crisp profile. They are dairy-free, gluten-free, vegan, vegetarian, and nut-free, making them suitable for a wide range of dietary preferences. With minimal effort, you can have a flavorful topping readily available to transform simple dishes into something extraordinary.
