27 CFR 20.91: Formula.

(a) Each article made with specially denatured spirits shall be made in accordance with (1) an approved formula, Form 5150.19, or (2) an approved general-use formula prescribed in this subpart, approved by the appropriate TTB officer as an alternate method, or published as a TTB ruling on the TTB Web site at https://www.ttb.gov.The manufacturer shall file Form 5150.19, along with the sample(s) required by § 20.92, and obtain an approved formula before manufacturing the article.

(b) An article made in accordance with a formula on Form 1479-A approved under previous regulations in part 211 of this chapter will be considered to comply with the requirements of this subpart.

(c) Any person who has approved formulas or statements of process, Form 1479-A or Form 5150.19, which have been discontinued or have become obsolete, may submit these formulas or statements of process to the appropriate TTB officer for cancellation.