The downstream cask market is the supported idea. Current 27 CFR 5.143 requires new charred oak for bourbon but does not require 53 US gallons, American white oak, malted barley or rye/wheat in the remainder of the mash. Distillation/entry maxima include 160/125 proof; source strict-below wording is inaccurate. https://www.ecfr.gov/current/title-27/chapter-I/subchapter-A/part-5/subpart-I/section-5.143
The bourbon-barrel entry moves from American white oak and cooperage to the barrel's second life in other whisky industries.
Wisniewski explains that barrels used once for bourbon are sold to other whisky producers, where the previously filled oak has a milder influence and becomes a common maturation vessel.
Displayed p. 51 / PDF sheet 50
Displayed p. 50 / PDF sheet 49
Bourbon Barrels
Fresh full-copy audit: 302 sheets read and visually surveyed; selected evidence rechecked in enlarged renders. The downstream cask market is the supported idea. Current 27 CFR 5.143 requires new charred oak for bourbon but does not require 53 US gallons, American white oak, malted barley or rye/wheat in the remainder of the mash. Distillation/entry maxima include 160/125 proof; source strict-below wording is inaccurate. https://www.ecfr.gov/current/title-27/chapter-I/subchapter-A/part-5/subpart-I/section-5.143 Verification concerns source fidelity, not independent endorsement of every source assertion.
Evidence
Wisniewski explains that barrels used once for bourbon are sold to other whisky producers, where the previously filled oak has a milder influence and becomes a common maturation vessel.
Locator
Locator type: Page
Start: Displayed p. 50 / PDF sheet 49
End: Displayed p. 51 / PDF sheet 50
Source section: Bourbon Barrels
Context
The bourbon-barrel entry moves from American white oak and cooperage to the barrel's second life in other whisky industries.
Annotation
Corroborates the existing global secondary-barrel supply-chain node. The source's precise tree, seasoning, and residual-liquid figures require stronger support.
Verification
Status: Verified
Verified against OCR text and rendered images of PDF sheets 49–50, displaying ebook pages 50–51.
Fresh full-copy audit — September 29, 2026
Authoritative locator: Displayed p. 50 / PDF sheet 49 through Displayed p. 51 / PDF sheet 50. This supersedes any older locator in the legacy citation text above.
The downstream cask market is the supported idea. Current 27 CFR 5.143 requires new charred oak for bourbon but does not require 53 US gallons, American white oak, malted barley or rye/wheat in the remainder of the mash. Distillation/entry maxima include 160/125 proof; source strict-below wording is inaccurate. https://www.ecfr.gov/current/title-27/chapter-I/subchapter-A/part-5/subpart-I/section-5.143
The whole supplied copy was read and visually surveyed; the locator was checked in enlarged source images. Source-fidelity verification does not independently validate every historical or scientific claim.