Cantonese Beef

Drain oranges, reserving juice; set oranges aside. In a Dutch over, brown beef and onion in oil; drain. Stir in the water, soy sauce, ginger and reserved juice. Bring to a boil. Reduce heat; cover and simmer for 1 to 1-1/2 hours or until beef is tender. Add the celery, green pepper and water chestnuts. Cover and cook for 20-30 minutes or until vegetables are tender. Combine cornstarch and cold water until smooth; stir into beef mixture. Bring to a boil; cook and stir for 2 minutes or until thickened. Stir in reserved oranges. Serve with rice.