Useful as a general production observation only. It is not a legal rule: an unlabeled straight whiskey is not thereby required to contain more than one barrel.
Bryson contrasts common multi-barrel assembly with the consumer-facing single-barrel form.
American straight whiskey is commonly assembled from multiple barrels, while a single-barrel bottling foregrounds one selected barrel and its bounded variation.
PDF sheet 297
Glossary and labeling distinctions
Rechecked during the complete 560-sheet review on 2026-08-27. The original pilot wording was narrowed because the source overstates the distinction as a labeling requirement.
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