Pickled Onions

1 red onion, finely chopped

½ cup red wine vinegar

3 tablespoons distilled white vinegar

1 ½ 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.