Adds direct North American support to the scientific entry-proof claim and to the broader cask–distillate pairing model.
North American application of entry proof as a spirit–barrel design decision rather than only a storage-efficiency choice.
Wright and Pilkington explain that fill strength changes the balance of water- and alcohol-soluble extraction and in-barrel flavor formation. Higher fill strength generally slows total extraction; producers therefore match entry strength to distillate composition and the intended mature profile, commonly pairing lighter distillates with higher strength and bolder distillates with lower strength.
Printed p. 104 / PDF sheet 294
Printed p. 102 / PDF sheet 293
Chapter 7 — Maturation and Blending
Verified against extracted text and rendered PDF sheets 293–294 on 2026-08-27.
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