Mortlach is known in trade circles as the Beast of Dufftown, a nickname earned through its peculiar 2.81-times distillation regime and the heavy, sulphurous spirit that results. The distillery, founded in 1823, was the first legal operation in Dufftown and for much of its life served as a keystone of Johnnie Walker blends rather than a single malt in its own right.
This 21-year-old sits within the range Diageo relaunched in 2018, replacing the earlier Rare Old/18/25 lineup. Bottled at 43.4% — a nod to the distillery's historical strength — it is matured in a combination of refill and first-fill sherry casks.
The nose opens with the waxy, meaty character Mortlach is prized for, layered over dried figs and polished furniture. The palate is dense: beef stock, walnuts, bitter chocolate and Seville orange. The finish drags pleasantly into tobacco and old oak. It is not a gentle Speysider; it is a slow, serious dram for those who appreciate the heavier end of the region.
