Supports treating maturation as a monitored transformation system, not a simple age counter.
The discussion follows barrel charring and the seasonal movement of whiskey through oak.
Risen describes maturation as interacting extraction, evaporation, and oxidation, then argues that quality does not increase linearly with age because evolving barrel chemistry can improve or over-oak the spirit.
PDF p. 67
PDF p. 66
How Whiskey Is Made — Aging
Fresh full supplied-ebook reading and image audit September29. PDF sheets 66–67. PDF66–67 supports age versus desired maturity as a useful distinction. Humidity-dependent ethanol/water loss and sponge metaphors are simplified; no universal loss rate, optimal age or sensory superiority follows.
Evidence
Risen describes maturation as interacting extraction, evaporation, and oxidation, then argues that quality does not increase linearly with age because evolving barrel chemistry can improve or over-oak the spirit.
Locator
Locator type: Page
Start: PDF p. 66
End: PDF p. 67
Source section: How Whiskey Is Made — Aging
Context
The discussion follows barrel charring and the seasonal movement of whiskey through oak.
Annotation
Supports treating maturation as a monitored transformation system, not a simple age counter.
Verification
Status: Verified
Visually checked against the canonical uploaded PDF on 2026-08-24; paraphrase is bounded to PDF pages 66–67.
September 29 fresh reading audit
Risen describes maturation as interacting extraction, evaporation, and oxidation, then argues that quality does not increase linearly with age because evolving barrel chemistry can improve or over-oak the spirit.
Locator: PDF sheets 66–67. These are supplied ebook PDF sheet numbers, not hardcover pagination.
PDF66–67 supports age versus desired maturity as a useful distinction. Humidity-dependent ethanol/water loss and sponge metaphors are simplified; no universal loss rate, optimal age or sensory superiority follows.
Full-source synthesis — Bourbon: The Story of Kentucky Whiskey