Step 1

Make the dressing: Combine the spinach, parsley, basil, tarragon, chives, capers, anchovies, garlic and sugar in a blender or food processor.

Step 2

Add the lemon juice, vinegar, mustard, Worcestershire sauce and mayonnaise and puree until pale green and very smooth. Season with salt and pepper as needed.

Step 3

Make the salad: Spread 1/4 cup dressing on a large platter. Top with the tomatoes and mozzarella, alternating. Season with flaky salt and pepper. Drizzle with more dressing and top with the sliced basil. Serve with more dressing on the side.