Current allowance for cask types and coloring must be checked against the final rule.
The article quotes producers and explains the policy rationale for leaving barrel treatment open.
The proposal allowed used, uncharred new, or charred new oak while adopting a 700-liter maximum, enabling American producers to differentiate themselves from bourbon and experiment within a recognizable global malt-whiskey frame.
PDF sheet 19
PDF sheet 18
Part III.B — Oak-cask treatment
Text and locator verified; policy, technical, or current-law inference remains subject to review against the complete article on 2026-09-04. The article’s proposal-stage account is historically verified, but current law must be taken from T.D. TTB-199 and current 27 CFR. TTB finalized the standard on December 18, 2024, effective January 19, 2025.
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