27 C.F.R. § 24.203
(a) Subject to paragraph (b) of this section, a winemaker, in the production of wine from honey, may add the following:
(b) After complete fermentation or complete fermentation and sweetening, the wine may not have an alcohol content of more than 14 percent by volume or a total solids content that exceeds 35 degrees Brix.
(26 U.S.C. 5387)
[T.D. TTB-23, 70 FR 2801, Jan. 18, 2005]