27 C.F.R. § 24.197 Production by fermentation.
Title 27 - Alcohol, Tobacco Products and Firearms
In producing special natural wine by fermentation, flavoring materials may be added before or during fermentation. Special natural wine produced by fermentation may be ameliorated in the same manner and to the same extent as natural wine made from the same fruit. Spirits may not be added to special natural wine with the exception of spirits contained in the natural wine used as a base or in authorized essences made on bonded wine premises as provided in §24.86 or in approved essences made elsewhere. Upon removal of the wine from fermenters, the volume of liquid will be determined accurately and recorded as wine produced. The quantity of liquid in fermenters at the close of each reporting period will be reported on the TTB F 5120.17, Report of Bonded Wine Premises Operations. (Sec. 201, Pub. L. 85–859, 72 Stat. 1386, as amended (26 U.S.C. 5386)) [T.D. ATF–299, 55 FR 24989, June 19, 1990, as amended by ATF–338, 58 FR 19064, Apr. 12, 1993]
Title 27: Alcohol, Tobacco and Firearms
PART 24—WINE
Subpart H—Production of Special Natural Wine
§ 24.197 Production by fermentation.