Auchentoshan 31 Years Old 1991 Whisky Sponge (Decadent Drinks)

Bottled by Decadent Drinks in 2023 as a 31 year old release in the Whisky Sponge range, with 179 bottles of 1991 vintage Auchentoshan distributed to the European market at cask strength of 53.6%. Decadent Drinks is the bottling arm of Angus MacRaild, with the Whisky Sponge series presenting long matured single malts under the well known online whisky writing persona of the same name.

Distilled in 1991 from 100% unpeated malted barley with Loch Cochno water from the Kilpatrick Hills, the wash was fermented around 62 hours in Douglas fir and stainless steel washbacks before triple distillation. Auchentoshan runs every drop through three copper pot stills, with the intermediate and spirit stages collecting at around 81% ABV. The increased copper contact strips sulphur compounds and fusel oils while concentrating light esters such as ethyl hexanoate and isoamyl acetate, leaving a clean, ester forward new make filled into ex Bourbon American oak.

Thirty one years in temperate maturation drove patient oak extraction. Lignin breakdown released vanillin, cis and trans oak lactones built coconut and sweet wood, and char layer interaction produced furfural alongside Maillard derived caramelised sugars. Tertiary stage ester transformation and slow oxidation through the staves integrate fruit, oak, and waxy texture at 53.6%, layered over the spirit's signature citrus and almond core.