Is Single Malt Always Better Than a Blend?

No. Single malt is not automatically better than a blend. In 1983, eight men tasted three malt whiskies and three blends repeatedly while blindfolded. They could not distinguish the categories, and experience did not improve their performance.[5] It is a striking challenge to confidence in the label.

Single malt describes how a Scotch whisky is made, not how much you will enjoy it. Blind studies have found no reliable distinction between malts and blends by taste. Whether people prefer one to the other is a separate question.[1][5][6]

What single malt and blend actually mean

Copper pot stills, malted barley and one distillery: these define single malt Scotch, not a superior grade of whisky.[1] For this comparison, the definitions are those of Scotch whisky. The Scotch Whisky Association, the producers’ industry body, describes five categories without ranking them by quality.[1] They tell you about ingredients and distillery origin, rather than excellence.

Blended malt and blended Scotch are different things. The former combines single malts; the latter brings malt and grain whiskies together.[1] According to the SWA, almost nine out of ten bottles of Scotch enjoyed worldwide are Blended Scotch Whiskies.[2]

“Single” means one distillery, not one cask. Single cask is not a defined term in the Scotch Whisky Regulations.[1][7] Neither term is a quality grade.

All five Scotch categories must mature in oak casks in Scotland for at least three years, be bottled at a minimum of 40% ABV, and have no additions other than water and plain caramel colouring.[7] Nor does a blend have to be young. Under Scotch law, any age statement gives the age of the youngest whisky in the bottle.[7]

Why single malt is not one flavour

Even neighbouring distilleries can make markedly different whiskies. The SWA’s production account describes just that, stating that malt whiskies “differ considerably in flavour according to the distillery from which they come”.[4] Single malt is a production category with considerable variety inside it.

That makes “I prefer single malt” less precise than it sounds. It may express a genuine preference among familiar bottles, but it tells someone else little about the flavours you enjoy. It is no guarantee that the next unfamiliar single malt will suit you, either.

A category helps organise whisky without predicting your response to every bottle. The useful editorial question is therefore not which category deserves higher status, but what a particular whisky offers. Once the distinction is clear, there is more room to consider character, recognition and personal enjoyment on their own terms.

What a blender is trying to achieve

A blender is working towards “a whisky of a definite and recognisable character”, in the SWA’s words. Its current FAQ says that this can involve combining up to 60 different Scotch whiskies.[2] That is a possibility, not a required recipe or a measure of quality.

The work is also about keeping that character consistent. In its 1995 account, the association describes blending as an art acquired through experience, with consistency central to the task.[3] Creating an identity and maintaining it are both part of the blender’s craft.

The same account explains grain whisky’s historical role through flavour. It describes pot still malt as sometimes strongly flavoured, and grain whisky as having “less pronounced characteristics”.[3] Stronger flavour is not automatically more desirable; those descriptions explain the components rather than rank them.

The association also rejects the idea that blending is simply dilution, calling it “the combining of like with like”.[3] The question is how successfully the whiskies come together, not how many components went into the recipe.

Story box: What the evidence shows

The record includes a small blindfolded experiment in 1983, a broader sorting study published in 2017, and the SWA’s 1995 account of blending. A founding story does not apply to this comparison.

Claim: In the 1983 experiment, the surgical unit’s volunteers could not distinguish malt from blended whisky.

Verdict: Documented

What the record shows: Eight men tasted three malts and three blends repeatedly while blindfolded; experience did not improve discrimination.

Evidence gap: The small sample cannot establish that nobody can distinguish the categories. The liking results were not checked.

Earliest known source and claim mapping: Chadwick and Dudley, British Medical Journal, 24 December 1983, abstract: https://pmc.ncbi.nlm.nih.gov/articles/PMC1550199

Claim: The 2017 study found no reliable distinction between blends and single malts in its tasting condition.

Verdict: Documented

What the record shows: Experts and novices in three countries sorted nine whiskies by smell and taste. French experts came closest to separating the categories by smell.

Evidence gap: Only the abstract was checked; the individual whiskies and their category split remain unresolved.

Earliest known source and claim mapping: Smith and colleagues, Flavour, 16 March 2017, abstract: https://sas-space.sas.ac.uk/6551

Claim: The SWA’s 1995 account described blending as the combining of like with like, not dilution.

Verdict: Documented

What the record shows: This is the industry body’s description of blending.

Evidence gap: None found for what the account says.

Earliest known source and claim mapping: Scotch Whisky Association, 1995, Section 4: https://www.dcs.ed.ac.uk/home/jhb/whisky/swa/chap4.html

Last checked: November 2026. The exact day requires verification before publication.

What blind research can actually tell us

Discriminating between categories, grouping whiskies by sensory similarity and deciding which tastes better are different questions. The 1983 experiment examined discrimination between malts and blends; the 2017 research used blind sorting to investigate perceptual categorisation.[5][6] Neither finding supplies a verdict here on which category people prefer.

The small 1983 experiment

Chadwick and Dudley’s 1983 British Medical Journal paper tested discrimination between malt and blended whisky. Its eight male volunteers included four regular whisky drinkers and four inexperienced drinkers. They tasted three malts and three blends repeatedly while blindfolded.[5]

Within that group, malt could not be distinguished from blended whisky, and experience did not improve discrimination.[5] Familiarity alone did not deliver reliable recognition. The result challenges confidence in an automatic ability to tell the categories apart, although the experiment’s small, specific sample limits how widely it can be applied.

The paper’s liking results were not available in the source material checked for this article. It therefore remains unresolved here whether the volunteers preferred blends, preferred malts or liked both equally. Failure to distinguish the categories is not a preference result.

The broader 2017 research

Smith, Sester, Ballester and Deroy investigated perceptual categorisation through blind sorting tasks in the UK, the USA and France. Experts and novices grouped nine whiskies by smell and then by taste.[6] Participants decided which whiskies seemed to belong together, rather than simply identifying them as malts or blends.

The authors reported that “no reliable perceptual distinction was revealed in the tasting condition between blends and single malts”. French experts came closest to separating the categories, but only by smell.[6] In this study, expertise did not produce a dependable boundary between the categories on the palate.

Similarity between a blend and its component malts explained the groupings better than the division between blend and single malt. The authors also concluded that successfully blended whiskies have distinctive, recognisable profiles of their own.[6] A blend can have its own identity, rather than tasting like an anonymous middle ground between its ingredients.

Only the abstract was available in the material checked here, so the findings should not be extended to claims about individual bottles or blind preference. Together, the studies challenge a simple perceptual hierarchy. They do not establish that all whiskies taste alike or that quality differences do not exist.

Three shortcuts that do not work

“Experts can always tell.” Expertise is not a guarantee. Experience did not improve discrimination in the small 1983 experiment, and the 2017 sorting study found no reliable taste distinction between the categories among experts and novices.[5][6] “Always” is the word that fails.

“A blend has no character of its own.” A recipe can create an identity. Recognisable character is the SWA’s stated aim for blending, and the 2017 researchers reported distinctive profiles in successfully blended whiskies.[2][6]

“All single malts belong together in flavour.” One production category, many characters. The SWA records considerable flavour differences between distilleries, including neighbours.[4] The label does not tell you everything in the glass.

Each shortcut asks one label term to answer too many questions. For the broader pattern, see whisky myths debunked. Here, the essential distinction is between category, recognition and preference. Knowing how a whisky was made, recognising its category blind and choosing to drink it are separate matters.

A more useful way to judge the claim

Start with what “better” means. If it means “more enjoyable to me”, neither a category definition nor a successful identification test can answer for you. If it means “easier to recognise”, that is a different claim, and the research gives good reason to question sweeping confidence.

Then separate what you know about a bottle from what you assume about its category. “I enjoyed this single malt more than that blend” is a clear, useful statement of personal preference. “Single malt is always better” turns that experience into a universal rule. The first tells someone what you enjoyed; the second goes beyond the evidence.

The editorial judgement is straightforward: treat both categories as possibilities. Single malt offers a defined connection to one distillery; blended Scotch offers a composition of malt and grain whiskies.[1] Those are meaningful differences in production. Neither, by itself, tells you which finished whisky you will prefer.

Where to go next

• Does Older Whisky Always Taste Better?: examine another label detail often mistaken for a quality guarantee.
• Does Darker Whisky Mean Older or Better Whisky?: separate appearance from assumptions about age and quality.
• Does All Scotch Taste Smoky?: question another broad expectation about Scotch flavour.

Sources

1. Scotch Whisky Association. Scotch Whisky Categories. Undated web edition, checked November 2026. https://www.scotch-whisky.org.uk/discover-scotch/enjoying-scotch/scotch-whisky-categories/
2. Scotch Whisky Association. Scotch Whisky FAQs. Undated web edition, checked November 2026. https://www.scotch-whisky.org.uk/discover-scotch/faqs/
3. Scotch Whisky Association. Section 4: The Importance of Blending. 1995 text, hosted by the University of Edinburgh School of Informatics. https://www.dcs.ed.ac.uk/home/jhb/whisky/swa/chap4.html
4. Scotch Whisky Association. Section 3: Scotch Whisky in the Making. 1995 text, hosted by the University of Edinburgh School of Informatics. https://www.dcs.ed.ac.uk/home/jhb/whisky/swa/chap3.html
5. Chadwick, S. J. and Dudley, H. A. Can malt whisky be discriminated from blended whisky? The proof. A modification of Sir Ronald Fisher’s hypothetical tea tasting experiment. British Medical Journal (Clinical Research Edition), 287(6409), pages 1912 to 1915, 24 December 1983. https://pmc.ncbi.nlm.nih.gov/articles/PMC1550199
6. Smith, B. C., Sester, C., Ballester, J. and Deroy, O. The perceptual categorisation of blended and single malt Scotch whiskies. Flavour, volume 6, published 16 March 2017, doi: 10.1186/s13411-017-0056-x. University of London School of Advanced Study repository record. https://sas-space.sas.ac.uk/6551
7. UK legislation. The Scotch Whisky Regulations 2009, SI 2009/2890. Current text and date checked to be confirmed by the editor.

This desk-researched article uses the site’s verified fact sheet, distinguishing the SWA’s industry account from the findings and limitations of two research abstracts.

Last checked: November 2026