1cupvery thinly sliced red onion 3 tablespoons red wine vinegar 2 tablespoons olive oil
1/2teaspoonsugar
1/2teaspoonkosher salt
1/4teaspoonground black pepper
Method
In a medium glass or ceramic bowl, toss together all ingredients. Cover and refrigerate for 3 hours. Refrigerate any remaining onions for up to 1 week.