In a large bowl, combine broth, garlic, ginger, soy sauce, sesame oil and cinnamon.
With a sharp knife, make several slits in turkey breast; place in bowl, turning to coat with marinade. Cover and refrigerate overnight.
Preheat grill. Drain turkey, discarding marinade. Grill, with lid closed, for 20 minutes; turning once. Spoon mango on top and cook 5 to 10 minutes more, or until a meat thermometer registers 170° F. Let turkey stand for 10 minutes before slicing.Servings: 6