- 1 red onion, finely chopped
- 1/2 cup red wine vinegar
- 3 tablespoons distilled white vinegar
- 1 1/2 tablespoons salt
- 2 teaspoons white sugar
- Bring the onion, red wine vinegar, white vinegar, salt, and sugar to a boil in a saucepan over medium-high heat. Remove from heat and allow mixture to steep until the onion is tender, about 20 minutes. Cool completely before serving.