Ingredients
2 small red onions, thinly sliced
1 cup white-wine vinegar
2 tablespoons sugar
1 tablespoon coarse salt
Preparation
Place onions in a medium heatproof bowl. Bring vinegar, sugar, and salt to a boil in a saucepan; pour over onions. Let cool completely. Refrigerate, covered, at least 2 hours and up to 1 month.
