Ingredients

  • 2 tablespoons white wine vinegar
  • 1 fillet anchovy, minced, optional
  • 1 teaspoon Dijon mustard
  • 1 teaspoon kosher salt, plus more for seasoning
  • Freshly ground black pepper
  • 1/3 cup extra-virgin olive oil, plus more for brushing
  • 1/4 cup roughly chopped parsley leaves
  • 3 tablespoons chopped tarragon leaves
  • 4 portobello mushrooms, stems removed and discarded
  • 4 ripe plum tomatoes, halved
  • 1 head romaine, quartered, root end attached

Method

  • Preheat an outdoor grill to medium heat.
  • Whisk the vinegar with the anchovy, if using, mustard, salt, and pepper in a small bowl.
  • Gradually whisk in the oil, starting with a few drops and then adding the rest in a steady stream to make a smooth, slightly thick vinaigrette.
  • Whisk in the parsley and tarragon and set aside.
  • Lay the romaine, mushrooms, and tomatoes out on a sheet pan and lightly brush them with olive oil and season with salt and pepper.
  • Place the mushrooms on the grill smooth side down.
  • Grill until juices collect in the cap and mushrooms soften, about 3 minutes.
  • Turn them over and cook until slightly charred around the edges and the center is very tender, about 3 minutes more.
  • Put the tomatoes on the grill skin side down and grill until juicy and charred, about 6 minutes.
  • Grill the romaine, turning to slightly char all sides, until the core end is tender, about 5 minutes.
  • Divide the wedges of romaine, mushroom caps, and tomatoes among 4 plates.
  • Drizzle the vinaigrette over the salads and serve.