Source: The Martha Stewart Show, September 2009
- 1 medium red onion, finely chopped
- 1/2 cup red-wine vinegar
- 3 tablespoons white vinegar
- 2 teaspoons sugar
- 1 1/2 tablespoons coarse salt
Place all ingredients in a small saucepan. Bring to a boil over medium-high heat. Remove from heat and let steep for 20 minutes. Let cool before using.