In a medium bowl, toss the shallot with the Champagne vinegar and a pinch of salt and set aside for 10 minutes, stirring once. Drain the shallot into a small bowl and reserve the vinegar. Whisk the olive oil and red wine vinegar into the shallot vinegar.
In a medium bowl, toss 1 Tbs. of the vinaigrette with the pickled shallots, arugula or watercress, pistachios, mint, basil, 1/4 tsp. salt, and a few grinds of pepper. Arrange the avocado, kiwi, mango, and pineapple on a platter. Drizzle with the remaining vinaigrette and season to taste with salt and pepper. Top with the arugula mixture and serve immediately.
nutrition information (per serving):
Photo: Scott Phillips