27 C.F.R. § 24.184
(c) Certificate required. The proprietor, prior to the use of volatile fruit flavor concentrate in wine production, shall obtain a certificate from the producer stating the kind of fruit or the variety of berry or grape from which it was produced and the total solids content of the juice before and after concentration.
(Sec. 201. Pub. L. 85-859, 72 Stat. 1383, as amended (26 U.S.C. 5382))
(Approved by the Office of Management and Budget under control number 1512-0298)