1/2 cup cider vinegar
1/4 cup coarse-grained Dijon mustard
4 to 6 garlic cloves
1/2 teaspoon salt
1/4 to 1/2 teaspoon pepper
1 cup extra-virgin olive oil
Process first 5 ingredients in a blender or food processor until smooth. With blender or processor running, add oil in a slow, steady stream; process until smooth.
Note: Store extra dressing in refrigerator up to 1 week.