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What is single malt whisky?
"Single malt" is the most misunderstood phrase on a whisky shelf. It does not mean one barrel, one age, or even one whisky — it's a precise term about grain and distillery. Here's what it actually means, and how it differs from the other styles you'll see.
Single malt, decoded
A single malt Scotch whisky is made from 100% malted barley, distilled in pot stills at a single distillery. The word "single" refers to the single distillery — not a single cask. A bottle of single malt is almost always a marriage of many casks from that one distillery, blended by the distiller for a consistent house style. (If it's from one barrel, the label will say "single cask".)
Blended whisky
Blended Scotch — the category that includes Johnnie Walker, Chivas and Famous Grouse — is a mix of one or more single malts with grain whisky from multiple distilleries. The malts bring flavour and depth; the lighter grain whisky smooths and stretches the blend. Around 90% of all Scotch sold is blended, and a well-made blend can be excellent — "blended" is not a synonym for "cheap".
Single grain whisky
A single grain whisky is made at one distillery but from grains other than (or in addition to) malted barley — typically wheat or corn — usually in a continuous column still. "Single" again means one distillery, not one grain. Single grains tend to be lighter, sweeter and softer than malts.
Blended malt
A blended malt (sometimes called "vatted malt") is a blend of single malts from two or more different distilleries — with no grain whisky at all. It's the trickiest term to remember: malt-only, but multi-distillery.
- Single malt — 100% malted barley, one distillery
- Single grain — grain whisky, one distillery
- Blended malt — malts from several distilleries, no grain
- Blended Scotch — malt + grain from several distilleries
So which should you buy?
Single malts let you explore the signature of an individual distillery, which is why enthusiasts chase them — but a great blend can out-drink a mediocre malt any day. The honest advice: ignore the marketing hierarchy and taste widely. The "best" category is whichever one you keep rating highly.
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