27 C.F.R. § 25.261
(a) Authorized processes. A brewer may, in accordance with this subpart—
(b) Brewery treatment of concentrate. Beer reconstituted from concentrate in accordance with this subpart shall (except with respect to the additional labeling of reconstituted beer under § 25.263) be treated the same as beer which has not been concentrated and reconstituted.
(Sec. 201, Pub. L. 85-859, 72 Stat. 1388, as amended (26 U.S.C. 5401))
[T.D. ATF-224, 51 FR 7673, Mar. 5, 1986, as amended by T.D. TTB-8, 69 FR 3830, Jan. 27, 2004]