1. Mix ham, bread crumbs and egg in a large bowl; shape into 12 large balls. Brown in oil in a large frying pan; remove.
2. Drain syrup from pineapple into a 4-cup measure; add soy sauce, brown sugar, and water to make 2 cups. Stir into drippings in frying pan. Place ham balls in sauce; cover. Simmer for 15 minutes.
3. Blend cornstarch and vinegar until smooth in a cup; stir into frying pan. Cook, stirring constantly, until sauce thickens and boilf for 3 minutes; stir in pineapple and peppers. Heal until bubbly.