In a mixing bowl, combine the mayonnaise, Dijon, capers, cornichon, lemon juice, anchovies, vinegar, and herbs. Mix thoroughly. Season with salt and pepper. Fold in the grated celery root. Season the sliced potatoes with salt and pepper. In the center of the plate, layer the potatoes forming a 3-inch circle. Using a 3-inch circle cutter, form 1/2 cup of remoulade on top of the potatoes. Thinly slice the smoked duck and wrap around the remoulade. Drizzle the vinaigrette around the plate. Garnish with parsley.
Yield: 4 servings