Ingredients
1/2 cup extra-virgin olive oil
1/2 cup fresh ruby-red grapefruit juice
2 tablespoons white-wine vinegar
2 tablespoons finely chopped fresh mint, plus 1 tablespoon whole leaves
1 teaspoon sugar
1 teaspoon coarse salt
Preparation
Whisk all ingredients together in a small bowl. Let stand 10 minutes.