CFR › Title 27 › Part 19 › §19.64727 CFR §19.647Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkAfter approval of an application by TTB, a plant qualified for the production of vinegar may only:(a)Produce vinegar by the vaporizing process; and(b)Produce distilled spirits of 30° of proof or less for use in the manufacture of vinegar on the vinegar plant premises.