- 1 tablespoon malt vinegar or cider vinegar
- 1 teaspoon Dijon mustard
- 1/2 teaspoon finely chopped fresh thyme
- 1/4 teaspoon minced garlic
- 1/4 teaspoon salt
- 1/8 teaspoon black pepper
- 1/4 cup extra-virgin olive oil
- 1 lb Belgian endives (4 large), cut crosswise into 1-inch pieces
- 6 oz red endive or radicchio di Treviso, cut crosswise into 1-inch pieces, or 1 medium round head radicchio, torn into bite-size pieces
- 2 cups loosely packed watercress sprigs (2 ounces)
- Whisk together vinegar, mustard, thyme, garlic, salt, and pepper in a large salad bowl until combined, then add oil in a slow stream, whisking until emulsified. Cover vinaigrette and let stand 1 hour.
- Add salad greens to vinaigrette and toss to coat.