Can be prepared in 45 minutes or less.

Ingredients

　　2 tablespoons white-wine vinegar

　　1/2 teaspoon Dijon-style mustard

　　2 teaspoons finely chopped fresh parsley leaves

　　1/3 cup extra-virgin olive oil

　　2 bunches of watercress, trimmed, washed well, spun dry, and separated into small sprigs

　　2 small heads of radicchio , shredded fine, washed well, and spun dry

　　3 scallions, sliced

　　6 ounces Parmesan at room temperature, shaved into curls with a vegetable peeler

　　In a small bowl whisk together the vinegar, the mustard, the parsley, and salt and pepper to taste, add the oil in a stream, whisking , and whisk the dressing until it is emulsified. In a large bowl toss together the watercress, the radicchio, and the scallions, pour the dressing over the salad greens, and toss the mixture well. Transfer the salad to a serving bowl and arrange the Parmesan curls on top.