27 C.F.R. § 19.647 Age of whisky containing neutral spirits.
Title 27 - Alcohol, Tobacco Products and Firearms
In the case of whisky containing neutral spirits, the age of the whisky or whiskies and the respective percentage by volume of whisky or whiskies and neutral spirits, shall be stated on the label as provided in part 5 of this chapter. (Sec. 201, Pub. L. 85–859, 72 Stat. 1356, as amended (26 U.S.C. 5201))
Title 27: Alcohol, Tobacco and Firearms
PART 19—DISTILLED SPIRITS PLANTS
Subpart S—Liquor Bottle and Label Requirements
Bottle Label Requirements
§ 19.647 Age of whisky containing neutral spirits.