It is believed that this is blended malt whiskey which content consists of 90% Ardbeg and other islay malts. 16 years old[1997-2014]. only 74 bottles were released. Before released this Octave series have been matured in sherrywood octave[1/8 size] casks.

See The Octave Cask Range from Duncan Taylor Scotch Whisky – Scotch Whisky News

At the bar, staff told me this was 99% Ardbeg plus something else.

Smell:peat smoke flavour plus chemical smell

Taste:Very strong smoky alcohol bite you mouth and burn your tongue and throat. After "storm" has passed away, relatively honest sweet taste overflow in your mouth and you realize it worth tasting this strong liquor.