27 CFR 5.23 - Alteration of class and type.
(a) Additions. (1) The addition of any coloring, flavoring, or blending materials to any class and type of distilled spirits, except as otherwise provided in this section, alters the class and type thereof and the product shall be appropriately redesignated.
(2) There may be added to any class or type of distilled spirits, without changing the class or type thereof, (i) such harmless coloring, flavoring, or blending materials as are an essential component part of the particular class or type of distilled spirits to which added, and (ii) harmless coloring, flavoring, or blending materials such as caramel, straight malt or straight rye malt whiskies, fruit juices, sugar, infusion of oak chips when approved by the Administrator, or wine, which are not an essential component part of the particular distilled spirits to which added, but which are customarily employed therein in accordance with established trade usage, if such coloring, flavoring, or blending materials do not total more than 2 1/2 percent by volume of the finished product.
(3) “Harmless coloring, flavoring, and blending materials” shall not include (i) any material which would render the product to which it is added an imitation, or (ii) any material, other than caramel, infusion of oak chips, and sugar, in the case of Cognac brandy; or (iii) any material whatsoever in the case of neutral spirits or straight whiskey, except that vodka may be treated with sugar in an amount not to exceed 2 grams per liter and a trace amount of citric acid.
(b) Extractions. The removal from any distilled spirits of any constituents to such an extent that the product does not possess the taste, aroma, and characteristics generally attributed to that class or type of distilled spirits alters the class and type thereof, and the product shall be appropriately redesignated. In addition, in the case of straight whisky the removal of more than 15 percent of the fixed acids, or volatile acids, or esters, or soluble solids, or higher alcohols, or more than 25 percent of the soluble color, shall be deemed to alter the class or type thereof.
(c) Exceptions. (1) This section shall not be construed as in any manner modifying the standards of identity for cordials and liqueurs, flavored brandy, flavored gin, flavored rum, flavored vodka, and flavored whisky or as authorizing any product which is defined in § 5.22(j), Class 10, as an imitation to be otherwise designated.