In a serving bowl, toss the quinoa with the mango, avocado, and raisins. Fold in the ham.
Whisk together the yogurt, vinegar, mustard, Italian dressing. Slowly whisk in the water, thinning just enough for pouring. The dressing will make 1 cup, so drizzle over the salad and reserve leftover dressing for another recipe.
Serves 2 for a main course or 4 for a side