The GlenAllachie 21 Years old (700 ml)

For its first five decades, GlenAllachie was the anonymous backbone of Chivas Regal and Clan Campbell — virtually no whisky left the Aberlour site with its own name on the label. When Billy Walker acquired the distillery in 2017, he slashed output by roughly 87% and imposed a strict first- and second-fill cask-only policy, ensuring every drop of the inherited stock would be re-evaluated on its merits. The 21 Year Old draws on that pre-2017 spirit, now matured under Walker's watch at the foot of Ben Rinnes, where spring- and snowmelt-fed streams from the north-east slopes supply the process water via Blackstank and Heanshead Dams — cold, mineral-rich water that contributes to the distillery's characteristically dense, fruit-laden new make. That new make is itself built on a 160–164 hour fermentation in 60,000-litre washbacks — among Scotland's longest standard fermentation windows — deliberately engineered to maximise ester formation before double distillation through lantern-shaped wash stills and horizontal shell-and-tube condensers. At 21 years, the spirit has spent extended time across a portfolio anchored by ex-Pedro Ximénez and Oloroso Sherry puncheons alongside ex-Bourbon American oak, bottled at a minimum 46% ABV, non-chill filtered and natural colour. What sets this expression apart within Speyside's 21-year tier is the combination of inherited pre-Walker distillate — lighter and more ester-forward from its blending-era regime — reshaped entirely by Walker's aggressive Sherry cask programme, producing a structural tension no peer distillery can replicate. Drinking well now, with the density to reward further cellaring through the late 2020s.