Ingredients
1 large head frisee (about 14 ounces), trimmed
1 small head radicchio (about 10 ounces), halved and sliced crosswise into 1/4-inch strips
2 tablespoons red-wine vinegar
1 tablespoon Dijon mustard
Coarse salt and freshly ground pepper
1/4 cup extra-virgin olive oil
Preparation
Tear the frisee into bite-size pieces, and place in a large bowl with the radicchio; set aside.
Whisk together vinegar and mustard in a small bowl. Season with salt and pepper. Whisking constantly, pour in oil in a slow, steady stream; whisk until emulsified. Just before serving, drizzle vinaigrette over salad; toss gently.
