A tasting note is not a report of a sensation. It is an utterance in a learned language.
The naïve assumption is that "blackcurrant, graphite, a little cedar" names things actually floating in the glass, the way a thermometer names a temperature. The theory this guide proposes is structuralist and slightly mischievous: a tasting note is phonological. It is assembled from a small, mostly arbitrary, tradition-specific set of contrasts — and, like the sounds of a language, each unit means nothing in isolation and everything by its difference from its neighbours.
Three consequences follow, and they are the spine of the piece:
- 01Phonetics is not phonology.
The glass holds a near-infinite phonetic substrate — every volatile molecule the nose can register. A tradition is the phonology laid over it: the decision about which differences are meaningful. Blackberry and blackcurrant contrast in one tradition and collapse into one phoneme — "dark fruit" — in another. Neither is more correct.
- 02To learn to taste is to acquire a phonology.
Infants hear every contrast in every language; by their first birthday they have tuned to their own and gone deaf to the rest. The novice tastes phonetically: undifferentiated "dark fruit," "oak." Training does not add information so much as install contrasts — afterwards you cannot un-hear cassis as distinct from blackberry, the way you cannot un-hear your own name.
- 03The unit is the difference.
No note is a positive thing.
/minerality/exists because it is not/fruit/and not/oak/; "lime" is meaningful because it is one feature away from "lemon." The whole guide is built on the minimal pair — two notes that differ by exactly one feature, and thereby prove the system is real.
The entire metaphor, mapped once so the rest can run on it. This list is the load-bearing wall; everything interactive below is a way of touching one of its rows.
- Phonetics
- The chemical–perceptual substrate; every molecule the nose can register. Universal, pre-linguistic.
- Phonology
- A tradition's system of contrasts — which of those differences it has decided to hear.
- Phoneme
- An atomic note:
/cassis/,/graphite/,/struck match/. - Distinctive feature
- The axis a note is built from:
[±fruit],[±ripe],[±reductive],[±woody],[±animal]. - Minimal pair
- Two notes one feature apart: lemon ~ lime; fresh apple ~ baked apple.
- Allophone
- A phoneme's conditioned surfaces:
/cherry/→[fresh]/[stewed]/[dried], governed by ripeness and age. - Phonotactics
- Which notes may legally cluster: petrol + lime + honey is well-formed; vanilla without oak's licence is not.
- Suprasegmentals
- Structure as intonation: acid is pitch and tension, tannin is grip, alcohol is volume, finish is duration. The notes are segments; structure is how the sentence is said.
- Dialect / accent
- WSET-standard, French-terroir, American-hedonist, natural-wine — the same wine described in four phonologies.
- The contested phoneme
/minerality/— the unit linguists would love, the one whose very existence is disputed.- Sound change
- The lexicon's drift across decades: arrivals, departures, fashions.
/petrol/TDN, a compound that accrues with bottle age and vineyard sun; concentrated in Riesling. Not present in the grape — it is made by time.
/petrol/ ~ /lime/ — they share the Riesling word and differ in [±tertiary]. The contrast tells you the wine's age in a single syllable.
Prized to the edge of fetish in the German, Austrian, and Anglophone-expert dialects; in some New-World accents the same molecule is heard as a fault and "corrected" out. One tradition's phoneme is another's noise.
The hero object. The real-world Aroma Wheel is, in effect, folk phonetics; this is its theoretical upgrade — a grid of notes arranged by feature axes the way the IPA arranges consonants by place and manner. Tap a cell to articulate a note: its distinctive features, its chemical correlate, exemplar wines, and arrows to its minimal-pair neighbours. Toggle a feature and watch the whole chart reorganize.
Set two glasses. They are the same wine in every respect but one: the first tastes of green apple, the second of ripe apple. Nothing else has moved — same body, same acid, same hand at the cellar. Hold them side by side and you are holding a minimal pair: two utterances that differ in exactly one place, and that one place is therefore proven to carry meaning. The phonologist does this with pat and bat to show that the buzz in the throat — the feature written [±voice] — is a working part of English. You have just done it with [±ripe], and proven the same thing about the language you taste in.
This is the whole method, and it is sneakier than it looks. A note, taken alone, names nothing you could point to. /green apple/ is not a fact about the glass; it is a position in a system, and it means only what its neighbours are not. Withdraw /ripe apple/ from the language and /green apple/ loses half its sense — there is no green without a ripe for it to be greener than. Saussure's line, that a language holds only differences and no positive terms, was meant for vowels and consonants; he would not have minded it being said of Chablis.
Which is why the useful unit is always the pair, never the entry. You do not learn /cassis/ by inhaling blackcurrant until it sticks. You learn it as the thing that is /black cherry/ with the ripeness turned up — cassis = black cherry + [+ripe] — and as the thing that is not the brambled hedgerow note its dialect keeps in a separate drawer. Acquire the neighbours and the note arrives for free, defined by its borders.
The pairs that teach the most are the ones that nearly defeat you. Pour /toast/ beside /struck match/. Both read, at a glance, as smoke; a beginner files them together and is not wrong to. But they are different phonemes from different families. /toast/ is [+woody], the char of a heated barrel; /struck match/ is [+reductive], the work of sulphur in the absence of air. The surfaces are twins; the origins are unrelated. Do the same with /cedar/ and /graphite/: both arrive as pencil, one the wood and one the lead, and telling them apart is most of what a trained nose is for.
And then the pair that is also a verdict. /leather/ and /barnyard/ stand one feature apart — [±fault] — and the same yeast, Brettanomyces, is behind both. A little reads as the worn saddle of an aged Syrah and is prized. A little more crosses a line and reads as the stable, the band-aid, the spoiled bottle. The contrast is real, but where it falls is not a fact of chemistry; it is a ruling, and different dialects rule differently. The natural-wine vocabulary, notoriously, has moved the line — hearing as funk, even as a virtue, what an older grammar files under flaw.
To taste, it turns out, is to have learned a language. Most people are raised monolingual in it without noticing, fluent in "nice" and "not nice" and a handful of inherited loanwords. This guide does the one immodest thing a small theory can: it shows you the phonemes. After that the wine sounds different — not because the wine changed, but because, like anyone who has finally learned to hear a contrast, you can no longer choose not to.
This was only the phonology. Morphology — how a note inflects for ripeness and age — and syntax — how structure and notes compose into a full tasting note — are left, Borges-fashion, as the unwritten next fascicle.