Scotland's whisky regions — what defines each style, the distilleries that belong to it, and where current value sits.
The most densely populated whisky region in Scotland. Around fifty operating distilleries clustered along the River Spey and its tributaries — Aberlour, The Glenlivet, Glenfiddich, Macallan, Glenfarclas, Glen Grant, Mortlach, Cragganmore. Speyside whiskies are typically associated with fruity, sweet, ester-driven profiles; refill bourbon and first-fill sherry are the dominant cask programs. By volume, Speyside accounts for roughly two thirds of Scotch single malt production.
Geographically the largest region — everything north of the Highland Line that isn't Speyside or Islay. Highland whiskies are stylistically diverse, from the gentle Dalwhinnie of the central Highlands to the maritime Old Pulteney of the north coast and the heavier Glenmorangie of the eastern Highlands. The region's heterogeneity is itself a defining feature.
The most distinctive of the regions — nine operating distilleries on a single Hebridean island, eight of which produce heavily peated whisky. Laphroaig, Lagavulin, Ardbeg, Caol Ila, Bowmore, Bunnahabhain, Kilchoman, Ardnahoe, and the unpeated Bruichladdich. Islay's exposed maritime climate and use of locally-cut peat give the whiskies their characteristic smoky, medicinal, phenolic profile.
An informal grouping rather than a strict SWA region — Highland-classified distilleries scattered across the Hebrides and Northern Isles. Highland Park and Scapa on Orkney, Talisker and Torabhaig on Skye, Jura on Jura, Tobermory on Mull, Arran (Lochranza) and Lagg on Arran, Isle of Harris on Harris, Isle of Raasay on Raasay. Profiles vary widely but maritime influence and varying degrees of peat are common threads.
South of the Highland Line. Historically associated with light, grassy, triple-distilled whiskies — Auchentoshan being the surviving exemplar — but the new wave of craft distilleries (Glasgow, Clydeside, Bladnoch, Annandale, Kingsbarns, Eden Mill, Holyrood, Lindores Abbey, Daftmill, Borders) is rapidly redefining what a Lowland Scotch can taste like. Most Scotch grain distillation also sits here.
The smallest of the SWA regions, comprising just three operating distilleries on the Kintyre peninsula — Springbank, Glen Scotia, and Glengyle. Once home to more than thirty distilleries in the nineteenth century, Campbeltown survives as a region partly through political tenacity and partly through Springbank's cult following. Profiles tend toward briny, oily, lightly-peated.