This might be from their original rickhouse. The beginning number is the tract. The highest number I've seen is 3.
Single Barrel and Coy Hill releases, indicating higher floors for intense aging, leading to high-proof "hazmat" whiskey from spots like
Coy Hill (highest elevation) and
Boiler Hill (Barrelhouses 105, 106, 107) for unique flavors. These numbers (e.g., BH 1-08) show the tract (1) and building number (08), with higher floors on Coy Hill yielding potent, high-proof expressions.
Key Rickhouse Locations & Significance:
- Coy Hill (BH 8, 9, 10, 11, 13): The highest point, creating intense heat and evaporation (Angels' Share), resulting in high-proof (over 130 proof) barrels for special releases like Coy Hill.
- Boiler Hill (BH 105, 106, 107): Another distinct area with unique aging characteristics.
- Tanyard Hill: Another location for special, high-proof rye releases.
How to Spot Them:
- Single Barrel:
The rickhouse number (e.g., BH 1-09) is printed on the neck label, with the first number indicating the tract.
- Special Editions:
Releases like the Coy Hill series prominently feature these numbers to highlight unique maturation.
What the Numbers Mean:
- Higher Floors = Higher Proof:
The intense heat on the upper floors (buzzards roost) of these warehouses concentrates flavor and alcohol, creating potent whiskies.
- Flavor Profile:
This intense aging creates bold, spicy, and robust flavors, as seen in the Coy Hill releases.
In short, the rickhouse numbers are essential markers for collectors and enthusiasts, pointing to specific, often high-elevation, aging conditions that produce extraordinary Jack Daniel's expressions.