27 CFR § 25.53
Submissions of samples of fermented products
April 24, 2020
The appropriate TTB officer may, at any time, require you to submit samples of:
(a) Cereal beverage, saké, or any fermented product produced at the brewery,
(b) Materials used in the production of cereal beverage, saké, or any fermented product; and
(c) Cereal beverage, saké, or any fermented product, in conjunction with the filing of a formula.
(26 U.S.C. 5415, 5555, 7805(a))