Mexican food, cinco de mayo food, condiment recipes, onion recipes, side, vinegar recipes, low cal recipes, low fat recipes
- 1 medium red onion, thinly sliced (about 1 cup)
- 1/4 cup red wine vinegar or apple cider vinegar
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.