CFR /  Title 27  /  Part 19  /  Sec. 19.648 Conduct of operations.

A vinegar manufacturer qualified under this subpart may:

(a) Separate by a vaporizing process the distilled spirits from a mash; and

(b) Condense the distilled spirits vapors by introducing them into the water or other liquid to make the vinegar. (26 U.S.C. 5504)