For lightly bitter greens (frisée and mizuna), a Sherry–walnut oil vinaigrette is perfect.
Ingredients
2 tablespoons Sherry vinegar
1/2 teaspoon Dijon mustard
1/4 teaspoon kosher salt
1/4 cup walnut oil
Preparation
Combine the vinegar, mustard, and salt. Whisk in the oil.