William Heavenhill is a selection-and-marrying exercise on top of Heaven Hill's standard bourbon production: the mash bill is the company's usual 78% corn, 10% rye and 12% malted barley, distilled at the Bardstown plant and aged in Heaven Hill's rickhouse system. For the 9th edition, barrels distilled in 2005 were matured for fifteen years on the 2nd and 3rd floors of Rickhouses H and I — mid-floor positions, where the temperature swing is gentler than the top of the house, allowing a balanced evaporation and maturation over that long a span. Those barrels were then married into a small batch and bottled at 109 proof. As the Small Batch expression of the series, it is a chosen, moderate bottling strength rather than a barrel-proof release, and it is left to the age and the barrel selection to carry the whiskey.

Every bottle sold through Midnight Whiskey is sourced as an authentic, sealed product and inspected before it ships. Orders are packed with padded, glass-rated handling and require an adult signature (21+) on delivery; we do not ship to anyone unable to verify legal drinking age. For our full sourcing and handling protocols, see our editorial and authentication standards.

What proof is William Heavenhill 9th Edition 15 Year?

The 9th edition is bottled at 109 proof, or 54.5% ABV. It is a small-batch release — several selected barrels married together — rather than a barrel-proof or single-barrel bottling, so 109 is a chosen strength rather than the barrels' natural proof. As a single edition, that figure is fixed for every bottle of the 9th edition.

Which William Heavenhill edition is the 15 Year Small Batch?

The 9th edition, released in 2021. It is worth being specific, because the William Heavenhill series has bottled a 15-year-old more than once: this Small Batch 9th edition at 109 proof, and an earlier 4th edition from 2015 bottled at cask strength — a much higher 144.6 proof, known as the "Green Label." They are different releases with very different strengths, so the edition and proof on the label are what identify which 15-year you have.

What is the mash bill of William Heavenhill 15 Year?

It uses Heaven Hill's standard bourbon mash bill — 78% corn, 10% rye and 12% malted barley — the same recipe behind Elijah Craig and Evan Williams. What distinguishes the 9th edition is the age and the selection: fifteen years in the Bardstown warehouses, drawn from barrels distilled in 2005 and married into a small batch.