Allt-a-Bhainne 25 Years Old 1995 Cask #AM 154 (Asta Morris)

Distilled in 1995 and bottled by Asta Morris in 2021 from single ex Bourbon cask AM 154 under the Heritage imprint, this is a 25 Years Old Allt-a-Bhainne at 58.9% ABV. The release is one of 141 bottles. Asta Morris is a Belgian independent bottler founded by Bert Bruyneel, taking its name from the founder's daughter and focused on single cask releases with distinctive minimalist labelling.

Allt-a-Bhainne ferments malted barley for 48 to 50 hours on Mauri liquid yeast in closed stainless steel washbacks, then double distills through two copper wash stills and two copper spirit stills with steam heating and shell and tube condensers. The short Speyside ferment produces a clean malt forward spirit built as a blend filler for Chivas Regal, Passport and 100 Pipers. New make is reduced with Rowantree Burn water and tankered to Keith for cask filling and maturation, since the distillery holds no warehousing on site.

Ex Bourbon American oak frames cask contribution on vanillin and oak lactones from the toasted and charred staves, with Maillard chemistry from hemicellulose oak sugars driving honey and vanilla. The clean American oak palette suits Allt-a-Bhainne's lighter blend filler spirit. Twenty five years in ex Bourbon develops the cask contribution into deep maturity, with the high retained 58.9% strength suggesting modest evaporation in the Keith warehouses and preserving fermentation derived compounds alongside the mature wood signature.