Most people who drink Scotch believe two things about the single malt–blend divide: that “single” means something like “pure”, and that blends are what you buy when you can’t afford a malt. Both are wrong, or at least badly incomplete. The actual distinction is a matter of law, it rests on two words — “single” and “malt” — that each mean something specific, and it tells you much less about quality than the price gap suggests. This piece sets out what the categories actually are and what follows from them.
The five legal categories
Since the Scotch Whisky Regulations of 2009, every bottle of Scotch must belong to one of five categories, and the name on the label is not optional.
Single malt Scotch whisky is made from 100 per cent malted barley, in pot stills, at a single distillery.
Single grain Scotch whisky is made at a single distillery from malted barley plus other cereals (usually wheat or maize), typically in column stills.
Blended malt Scotch whisky is a mix of single malts from more than one distillery. No grain whisky.
Blended grain Scotch whisky is a mix of single grains from more than one distillery. Rare.
Blended Scotch whisky is a mix of at least one single malt and at least one single grain. This is what most people mean by “a blend”.
All five must be distilled and matured in Scotland for at least three years in oak, and bottled at no less than 40 per cent. The single malt, blended Scotch, blended malt and grain whisky style pages cover each in depth.
What “single” means
“Single” means a single distillery. It does not mean a single cask, a single batch or a single year. A standard single malt — Glenfiddich 12, say — is a marriage of hundreds of casks of different ages, from different wood, filled in different years, combined to achieve a consistent house style. The only thing that makes it “single” is that every drop was distilled in the same building.
This is why a single malt can be perfectly consistent from year to year: the distillery is blending, in all but name, from its own stock. The term for whisky from one cask is “single cask”, which is a different and much rarer thing.
What “malt” means
“Malt” means malted barley, and only malted barley. Barley is steeped in water, allowed to germinate until the starches in the grain begin converting to sugar, then dried to halt the process. The dried malt is milled, mashed with hot water, fermented and distilled in copper pot stills in batches. Pot stills are inefficient, leaving a great deal of flavour in the spirit, which is the point.
“Grain” whisky, by contrast, is made from a mash in which malted barley is a minority ingredient — enough to supply the enzymes — and the bulk is unmalted cereal. It is distilled continuously in column stills, which are efficient and produce a much lighter, cleaner spirit at a higher strength. Our pot still vs column still guide explains the mechanics. Grain whisky is cheaper to make, matures faster and has less character; its role in a blend is to provide a soft, sweet base that lets the malts show without overwhelming.
So what is a blend?
A blended Scotch is a composition: grain whisky, typically 60 to 75 per cent of the total, married with malt whiskies from several distilleries. The blender’s craft is in selecting malts whose characters complement each other and the grain, and in keeping the result consistent from batch to batch as cask stocks change. Our blending guide goes into how that is done.
Blends dominate the market, and have done since the category was invented in the 1860s. Around three-quarters of all Scotch sold is blended, and the biggest brands — Johnnie Walker, Ballantine’s, Chivas Regal, Grant’s, Dewar’s, J&B, William Lawson’s — are all blends. The single malt boom of the last forty years has changed the conversation but not the volumes.
Why single malts cost more
Several reasons, and quality is only one of them.
Malt whisky is more expensive to make: pot stills are batch processes, barley costs more than wheat, and malting is a separate step. Single malts are typically aged longer than the components of standard blends. And the category has been marketed as premium since the 1960s, when Glenfiddich first sold single malt abroad in earnest, so the price reflects positioning as well as cost.
There is also a supply question, and it is one the industry rarely discusses. Most malt distilleries exist to supply blends. Only a portion of their output is bottled as single malt, and that portion is often the better casks. A blender buying in bulk is not paying for the brand on the front label.
Is a single malt better?
Not inherently, and anyone who tells you otherwise is selling something. A single malt is more expressive of one place and one process; it has more individuality, which is what enthusiasts prize. But individuality is not the same as quality. A young, poorly cask-managed single malt is a worse drink than a well-made blend, and some of the most accomplished whiskies in Scotland are blended malts — Johnnie Walker Green Label, the Compass Box range, Monkey Shoulder at the entry level — and a few are blended Scotch at the top end.
What a blend sacrifices is distinctiveness. Because its grain component is close to neutral and its malts are chosen to balance one another, a blend tends toward the middle: smooth, approachable, without sharp edges. That is a feature for most of the people who buy whisky and a drawback for the minority who want to be surprised.
The one that confuses everyone: blended malt
“Blended malt” sits between the two and is widely misunderstood. It contains no grain whisky at all — only single malts from different distilleries — so it has the depth and character of malt with the balance that comes from combining several. It used to be called “vatted malt” and, briefly and controversially, “pure malt” before the 2009 regulations banned that term as misleading. If you like single malts but want something more rounded, blended malt is usually where to look, and it is often better value than either neighbour.
What the label tells you
Under current rules, the category must appear on the front label, which makes the shelf easier to read than it was. “Single malt Scotch whisky” is one distillery, all malt. “Blended Scotch whisky” is malt and grain. “Blended malt” is malt from several distilleries. “Single grain” is the one most likely to surprise, since it sounds like single malt and is usually a light column-still whisky. Our label guide covers the rest of the words.
The practical upshot
Buy single malts when you want to taste a place. Buy blends when you want reliability, a mixing whisky or value at scale. Buy blended malts when you want both. And stop treating the categories as a hierarchy, because the whisky trade does not: the master blenders who make Johnnie Walker and Chivas Regal are among the most skilled people in the industry, and the single malts they draw on exist largely because the blends have paid for them.
Our reviews score blends and single malts on the same scale, because the point stands: the best blends beat the weakest single malts comfortably, and price is a poor predictor of either.
