Ingredients

• 1/4 cup white-wine vinegar
• 2 tablespoons finely chopped shallot
• 1/2 teaspoon salt
• 1/2 teaspoon Dijon mustard
• 1/4 teaspoon black pepper
• 3/4 cup olive oil

Instructions

1. Whisk together vinegar, shallot, salt, mustard, and pepper until salt is dissolved. Add oil in a slow stream, whisking until emulsified.