Scotch whisky stands apart from its global cousins through tradition, ingredients and technique. Distilled primarily from malted barley, Scotch is usually double-distilled and often shaped by peat smoke, giving it a bold, earthy character.
By law, it must mature in oak casks in Scotland for at least three years, with regions like Islay, Speyside and the Highlands each having distinct styles.
Irish whiskey, in contrast, is often triple distilled, producing a smoother, lighter spirit. It often uses a mix of malted and unmalted barley and traditionally avoids peat, resulting in a cleaner, fruitier profile.
Across the Atlantic, American whiskey – most famously bourbon and Tennessee whiskey – leans heavily on corn. Bourbon must be made using at least 51% corn and aged in new charred oak barrels, creating a sweeter, fuller flavour profile of vanilla and caramel. Rye whiskey, which is spicier and drier, is another American hallmark.
Canadian whisky, often dubbed “rye” regardless of grain content, is generally lighter and smoother, making it versatile in cocktails.
Japanese whisky is inspired by Scotch and produced by distilleries that use Japanese oak (Minzunara) barrels for aging and water sourced from Japan’s mountain springs. The result is refined drams that prioritise a light and delicate flavour profile over power.
Top image: A gallon bottle (4.5 Litre) of 58 Year Old Glenfarclas (estimate £24,000-45,000) goes on view as part of a preview exhibition of the third edition of The Distillers One of One ultra-rare whisky auction at Sotheby's on September 23, 2025 in London, England. (Credit: Tristan Fewings/Getty Images for Sothebys)
