27 C.F.R. § 19.348
A proprietor must obtain approval of a formula on form TTB F 5100.51 as provided in §§ 5.192 and 5.193 of this chapter before a proprietor may:
(b) Produce gin or vodka by other than original and continuous distillation.
(26 U.S.C. 5201, 5555)
[T.D. TTB-92, 76 FR 9090, Feb. 16, 2011, as amended by T.D. 196, 89 FR 87939, Nov. 6, 2024]