In 4-quart Dutch oven heat oil over medium heat. Brown half the pork at a time; remove and set aside. Add onions and garlic; cook until onions are tender. Return pork to Dutch oven; add beans, broth, lime juice, chili pepper, white pepper, and nutmeg. Bring to boiling; reduce heat. Simmer, covered, 1 hour or until pork is tender.
Peel and seed mangoes; slice one half. Chop remaining; stir into chili. Heat through. Top with sliced mangoes. Makes 8 servings.