How to Make It
Prepare Vinaigrette: Combine first 6 ingredients in a medium bowl. Whisk until blended. Add olive oil gradually, whisking constantly after each addition. If made in advance, cover and refrigerate. Shake well before using.
Prepare Cobb Salad: Wash, dry, and place watercress, romaine, and radicchio in a large bowl.
Toss with enough dressing to lightly coat the leaves and transfer to a platter or individual plates. Arrange avocado, diced cooked chicken, crumbled bacon, hard boiled eggs, tomatoes, green onions, and blue cheese in rows on top of the greens.
Lightly drizzle vinaigrette over the salad(s) and serve.
Excerpted from Joy of Cooking by John Becker and Megan Scott. Copyright © 2019. Reprinted by permission of Scribner, an imprint of Simon & Schuster, Inc.