Turkey Giblet Gravy

Name: Turkey Giblet Gravy
Prep time: 15 min
Cook time: 1 h 15 min
Total time: 1 h 30 min
Cuisine: American
Ingredients: 1 package of giblets and neck from turkey, excluding liver; 4 cups water; 1 cup turkey drippings; 0.5 cup cold water; 6 tablespoons cornstarch; 1 large hard-cooked egg, chopped; salt and ground black pepper to taste