Ingredients

3 tablespoons sherry vinegar 

1/2 teaspoon Dijon mustard 

1 teaspoon minced shallot 

Coarse salt and freshly ground pepper 

1/4 cup plus 2 tablespoons extra-virgin olive oil 

Preparation

Combine vinegar, mustard, shallot, 1/2 teaspoon salt, and 1/4 teaspoon pepper in a bowl and whisk to combine. Whisking constantly, add oil in a slow, steady stream until oil is incorporated and mixture is emulsified. Serve immediately.