Wash and spin dry the rocket (or drain well). Peel and cut the mango into thin slices. Drain the mozzarella well and cut into thin slices.
Arrange the rocket on a platter. Top with mango and mozzarella slices. Season with salt and pepper from the mill.
Make the dressing: In a jar with a lid, combine the orange juice and zest, white balsamic vinegar, extra virgin olive oil, and a small pinch of salt. Shake for about 30 seconds until blended, or use a whisk. Pour the dressing over the salad.
Using a peeler, create thin shavings from the parmesan piece and scatter over the top.