Mortlach 11 Year Old 100 Proof Signatory
Mortlach 11 Year Old 100 Proof Signatory
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DESCRIPTION
A small batch release from the Mortlach distillery in Speyside, bottled by Signatory independent bottler in their 100 Proof range. Distilled in 2014, matured for 11 years in 1st-fill Oloroso sherry butts and refill hogsheads, and bottled in 2025. Non-chillfiltered, naturally coloured and bottled at high strength of 57.1%. (Bottle size 70cl)
NOTES FROM THE WB TEAM
The 57.1% used in this 100 Proof range is a nod to the traditional British proof system, a historic method of measuring alcohol strength that predates modern ABV (alcohol by volume) standards. In the 18th and 19th centuries, the British Navy required a reliable method to verify the strength of spirits to ensure they weren’t being watered down. The test involved soaking gunpowder with the spirit and attempting to ignite it. The point at which gunpowder would reliably ignite was eventually standardized in 1816 as 100 proof, which corresponded to 12⁄13 alcohol by weight, or approximately 57.15% ABV. This was the official British proof system until it was replaced by ABV in 1980.