A proprietor may withdraw from customs custody spirits imported or brought into the United States in bulk containers for transfer of those spirits without payment of tax to the bonded premises of the proprietor's distilled spirits plant. The proprietor may receive these spirits either in bulk containers or by pipeline. Spirits received on bonded premises under this section may be:
(a) Withdrawn for any purpose authorized by chapter 51 of the IRC in the same manner as domestic spirits; or
(b) Redistilled or denatured only at 185° or more of proof. For the requirements regarding transfers of bulk spirits from customs custody to the bonded premises of a distilled spirits plant, see subpart L of part 27 of this chapter.