Pickled Onions is a gluten free and vegan side dish. One serving contains 6 calories, 0g of protein, and 0g of fat. This recipe serves 4. This recipe covers 0% of your daily requirements of vitamins and minerals. If you have apple cider vinegar, sugar, onion, and a few other ingredients on hand, you can make it. From preparation to the plate, this recipe takes around 35 minutes.
Place onion slices in a medium bowl.
Pour vinegar and 1/2 cup warm water over onion. Stir in sugar and season with salt; let stand until slightly pickled, about 30 minutes.
Drain. DO AHEAD: Can be made 2 days ahead.
Let cool slightly. Cover and refrigerate.