To store fresh ginger, wrap the unpeeled piece in freezer wrap and place it in the freezer - it will keep indefinitely.
In a large bowl, stir together tuna, salad dressing, 2 tablespoons of the mayonnaise, the garlic, and ginger. Spread remaining mayonnaise over one side of each of the tortillas. Divide bok choy, sweet pepper, and jicama among wraps. Top with tuna mixture and roll up.
3 lean protein, 1 starch, 1 vegetable, 1/2 fat