Divide the pork, broccoli, carrots, water chestnuts, green pepper and onions evenly among four pieces of double-layered heavy-duty foil (about 18 in. x 12 in.). Combine the soy sauce, sesame oil and ginger; drizzle over pork and vegetables. Fold foil around filling and seal tightly.
Grill, covered, over medium heat for 10-12 minutes or until vegetables are tender and pork is no longer pink. Serve with rice if desired. Yield: 4 servings.