Ingredients
1 tablespoon Dijon mustard
1 1/2 tablespoons red-wine vinegar
1/2 teaspoon coarse salt
Pinch freshly ground pepper
1 large egg yolk
3/4 cup extra-virgin olive oil
1 tablespoon water
Preparation
In a small bowl, whisk together the mustard, vinegar, salt, pepper, and egg yolk. Drizzle in oil, whisking constantly until thickened. Add 1 tablespoon water, and whisk to combine.
