Single Cask vs Single Malt vs Blended Malt: What's the Difference?
If you've spent any time browsing whisky shelves, you've probably noticed terms like "single malt", "single cask", and "blended malt" appearing on labels — sometimes on bottles that look very similar. These terms are legally defined and tell you a lot about what's inside the bottle. Here's what they actually mean.
Single Malt Whisky
A single malt Scotch whisky must come from a single distillery and be made entirely from malted barley. That's it. The "single" refers to the distillery, not the cask — so a single malt is almost always a vatting of many casks from that one distillery, blended together by the master distiller to achieve a consistent house style year after year.
When you buy a bottle of Glenfiddich 12 or Glenlivet 15, you're buying a single malt — reliably consistent, because it's drawn from hundreds of casks blended to match a target flavour profile.
Single Cask Whisky
A single cask whisky takes things a step further. As the name suggests, every drop in the bottle comes from one individual cask. No blending, no vatting. What you get is the pure, unfiltered character of that specific barrel — its age, its wood, its history.
This is why single cask whiskies are inherently limited (typically 200–600 bottles per cask) and why no two are exactly alike. A single cask Ardnamurchan from 2023 and another Ardnamurchan single cask from the same year can taste completely different depending on the barrel.
Single cask bottlings are the speciality of independent bottlers like Adelphi, Hunter Laing, and the Caskells Selection — who source individual casks directly from distilleries and bottle them as-is, often at cask strength.
Blended Malt Whisky
A blended malt (formerly called "vatted malt") is a whisky made from single malts from two or more distilleries, combined together. There's no grain whisky involved — it's all malt — but it draws from multiple sources.
Monkey Shoulder is a well-known example, blending malts from three Speyside distilleries. Blended malts can offer complexity and value, combining the strengths of different distilleries into one bottle.
Quick Reference
| Term | Distillery | Cask | Grain Whisky |
|---|---|---|---|
| Single Malt | One | One or more | No |
| Single Cask | One | One | - |
| Blended Malt | Multiple | Multiple | No |
| Blended Scotch | Multiple | Multiple | Yes |
Why It Matters When You're Buying
If you value consistency and brand approachability, a single malt from a well-known distillery is usually a safe choice. If you want something unique and expressive of a specific cask, a single cask bottling — especially from an independent bottler — is where the real excitement lies. Blended malts sit in between: versatile, often great value, and ideal for mixing or everyday drinking.
At Caskells, we specialise in single cask independent bottlings precisely because no two cask bottlings tell the same story. Browse our current selection or visit us at G33 Lee Tung Avenue, Wan Chai.