“Roast Beef Parboiled and Steam Roasted” shall be prepared so that the weight of the finished product, excluding salt and flavoring material, shall not exceed 70 percent of the fresh beef weight. Beef cheek meat and beef head meat from which the overlying glandular and connective tissues have been removed, and beef heart meat, exclusive of the heart cap may be used individually or collectively to the extent of five percent of the meat ingredients in the preparation of canned product labeled “Roast Beef Parboiled and Steam Roasted”. When beef cheek meat, beef head meat, or beef heart meat is used in preparation of this product, its presence shall be reflected in the statement of ingredients required by Part 317 of this Article.