The six traits · The World of Wine, by Nolea

Sweetness, acidity, tannin, alcohol, body and finish describe different parts of a sip. You can begin noticing them without formal training. Naming each sensation separately helps you describe a glass with more confidence.

Four sensations to notice; taste receptors are distributed across the mouth, not divided into exclusive zones

Sweetness

sweetness is a sensation; sugar can be measured

Sweetness is a taste you can assess across the mouth. Sugar is its main source in wine, though aromas and other components affect the impression. Residual sugar means sugar in the finished wine, measured in grams per litre; it may remain after fermentation or come from an allowed sweetening addition. Label terms depend on the wine category and the rules that apply.

A sensory sweetness scale; laboratory sugar content and label categories are separate measures

For still wine, the OIV labelling standard calls a wine dry at up to 4 g/L of glucose and fructose, or up to 9 g/L when total acidity, expressed as tartaric acid, is no more than 2 g/L below that sugar content. That is a labelling rule, not a threshold everyone tastes alike. Acidity can reduce the impression of sweetness, so compare the whole sip rather than guessing grams from taste.

Sparkling wine has its own sweetness terms. These are the declared categories used for Champagne; the names can be confusing, so compare them with their sugar ranges:

The label says	Sugar	Translation
Brut Nature	Less than 3 g/L	No sugar added after the second fermentation
Brut	Less than 12 g/L	Dry; most Champagne lives here
Extra Dry	12–17 g/L	Sweeter than Brut
Demi-Sec	32–50 g/L	Sweet; try with cake
Doux	More than 50 g/L	Very sweet

To compare dry and sweet, try a Muscadet beside a Sauternes or a Tokaji aszú. They give you contrasting reference points. Check the producer’s analysis if you want exact sugar figures; the name alone does not supply them.

Words for different levels and impressions of sweetness:

Cloying: sweetness that feels excessive or heavy in relation to the rest of the wine. It describes your impression of balance, not an absence of acid.
Bone-dry: no perceptible sweetness; it need not mean chemically zero sugar.
Dry: little or no perceptible sweetness. A dry label follows category rules, so it is a separate judgement from your taste.
Off-dry: a little noticeable sweetness. Specify this when you want a wine with a gentle sweet edge.
Luscious: richly sweet in taste. Honeyed can describe a honey-like aroma; check sweetness separately.

Compare dry and sweet in pictures →

Acidity

if your mouth waters, that's acidity talking

Acidity gives wine sourness and often makes your mouth water. You may feel it under the tongue and along the jawline, where saliva pools a few seconds after you swallow. Assess it alongside the wine’s other sensations.

pH and the amount of acid are different measurements. Neither tells you the whole story of how tart a wine tastes.

pH is not a tasting score

Winemakers measure acidity in more than one way. pH describes the activity of hydrogen ions; a fall of one pH unit means a tenfold increase in that activity. Titratable acidity measures how much acid can be neutralised. The two measurements are related to different aspects of wine, so a lower pH does not mean a wine contains proportionally more acid or tastes that much sharper.

For an acidity comparison, try a Viognier or Gewürztraminer beside a Riesling, Sancerre or Vinho Verde. The first pair often feels softer in acidity; the others often feel more mouth-watering. Bottles vary, so compare sourness and salivation, then consider how sweetness changes the impression.

These words describe acidity in relation to the rest of the wine:

compare sourness and mouth-watering

Flabby: acidity that seems too low to balance the rest of the wine.
Soft: gentle acidity that gives the wine a rounded feel.
Fresh: noticeable acidity that makes the wine feel refreshing.
Crisp: a brisk sensation like biting into an apple.
Racy: pronounced, lively acidity.
Nervy: pronounced acidity that can feel sharp alongside the fruit.
Searing, tart: acidity that tastes sharply sour. Consider how it feels alongside the fruit, sweetness and body.

These words describe an impression, not a laboratory measurement. The same amount of acidity can feel different alongside more fruit, sweetness or body.

Compare mouth-watering acidity and tannin’s grip →

Tannin

notice the drying grip on your gums

Tannin gives wine a drying, grippy texture. Tannins come from grape skins, seeds and stems, and can also come from oak. Their interactions with saliva and the surfaces of the mouth contribute to astringency, the drying sensation. That is why your gums can feel slightly rough after a sip.

If you want the feeling without the wine, over-steep a black tea. That furry, drying grip helps you recognise tannin. Grape tannin and oak tannin behave differently, too: grape tannin can run from silk to firm leather, while oak can add tannin and flavour, with the effect changing by barrel age, toast, wine and contact time.

Skin and seed contact during winemaking affects how much tannin enters the wine. Contact time, temperature and extraction technique matter alongside the grape. Some varieties tend to give more tannic wines than others. Nebbiolo, Tannat, Cabernet Sauvignon and Syrah often have more grip than Gamay or Pinot Noir. Try a Beaujolais or Pinot Noir beside a young Barolo, a Madiran (made with Tannat in south-west France) or a Napa Cabernet. Take a sip of each with a minute between them, then compare the strength and feel of the tannin.

notice tannin as a drying texture

Words for the amount and feel of tannin:

Silky: fine tannin that gives the wine a smooth feel, as you may find in mature Burgundy.
Fine-grained: noticeable but fine and evenly spread, like the nap on suede.
Velvety: a smooth, plush texture with a little more weight.
Chewy: substantial tannin that gives the wine a dense feel. Try it with food and compare.
Grippy: a firm drying sensation that lingers after the sip.
Astringent: a drying, rough sensation. Consider how strong it feels alongside the fruit and the rest of the wine.
Green: a bitter, raw character that can suggest underripe stems or seeds. The word describes an impression; it does not predict how the bottle will age.

Tight often describes a wine that feels firm or not yet open; it is an impression, not a precise measure of age. Rich food can change how tannin feels, which is why firm reds often suit some hearty dishes. The steakhouse cliché has a practical basis.

Alcohol

swirl, tilt, count the tears

Yeast converts sugar into alcohol during fermentation. You may notice alcohol as warmth at the back of your throat. When that warmth feels like burning and dominates the wine, tasters often call it “hot”. Assess it alongside the fruit, body and other sensations.

Tasters describe alcohol as low, medium or high, with the boundaries depending on the framework and wine category. Check the label for ABV, alcohol by volume. Alcohol also affects aroma release and the impression of body; more alcohol does not simply mean more aroma.

Party trick: swirl the glass, tilt it, and watch the legs, the tears streaking down the inside. Evaporation changes the film’s composition and temperature; differences in surface tension draw liquid up the glass before droplets fall back down. Physicists call it the Marangoni effect; use that at a dinner party at your own risk. The pattern also depends on temperature and the glass surface, so it cannot reliably measure alcohol. If you guess the ABV, check the label. I'm right about two times in three, which is enough to look clairvoyant.

Calibration pair: a Vinho Verde at around 10%, or a Mosel Kabinett at 8 or 9, against an Amarone at 15.5%, a ripe Zinfandel or a Châteauneuf-du-Pape. Compare their warmth and weight in your mouth. Use the label to choose contrasting bottles, then record how their warmth feels. Sensory impressions will not give you an exact ABV.

Words for how alcohol feels in a wine:

Thin: a lack of weight or flavour for the wine’s overall frame; alcohol alone does not explain it.
Light: a gentle impression of alcohol.
Warm: noticeable alcohol warmth that feels pleasant.
Generous: noticeable alcohol that contributes fullness without dominating.
Heady: alcohol that feels prominent in each sip.
Hot: burning at the back of the throat. The alcohol feels dominant; consider whether it overwhelms the rest of the wine.

Body

skimmed milk vs whole milk

Body is the impression of weight and fullness in your mouth. Alcohol, sugar and other wine components can contribute, but it is not an arithmetic sum. For a familiar comparison, think of skimmed milk beside whole milk: different degrees of fullness within the same kind of drink.

Alcohol often contributes to fullness, but there is no minimum ABV for a full-bodied impression: a low-alcohol sweet wine can feel substantial. Ageing on lees, the spent yeast sediment, dissolved components and texture can also affect how you judge body. Glycerol is a fermentation product, but its role at normal wine concentrations is too variable to use as an explanation for every oily wine. Compare a Muscadet with a barrel-fermented Chardonnay, or a Beaujolais with a ripe Grenache, and describe what you feel as light, medium or full.

In chapter seven, you'll use body when matching wine with food. Light dish, light wine; rich dish, rich wine. Then consider sweetness, acidity, tannin and the strongest flavour in the dish.

The finish

Follow a sip through three stages: the attack (the first impression: sweetness, fruit), the mid-palate (the sensations while the wine is in your mouth) and the finish (whatever stays after you swallow or spit). Some wines feel full at first, then lose flavour or weight before the finish. A wine may keep changing after you swallow; notice how long and how pleasantly the finish lasts.

After swallowing, exhale through your nose. Aromas travel from the mouth to receptors in the nose, retro-nasal smelling, and you may notice different aromas from those on the first sniff. A longer finish can be useful when assessing a wine, but it is only one part of the picture.

You can describe the finish as short or abrupt (gone before the glass is back on the table), clean (without an unpleasant aftertaste; it can be short or long), lingering, long, or endless. One caution: a flaw can linger too. Lingering bitterness or alcohol heat should be distinguished from a lasting, pleasant flavour. Consider whether you enjoy the flavours that remain.

Wines to compare

taste contrasting styles side by side

Here's the problem with every scale in this chapter: words don't calibrate anything. I can tell you Barolo is tannic until we're both bored, but your tongue has to meet the wine before “4 out of 5” means a thing. So do what music students do with a tuning fork. Buy the extremes, taste them side by side, and let your mouth memorise the endpoints. Every wine you drink afterwards lands somewhere between bottles you've actually met.

Trait	Feels like	Less pronounced	More pronounced
Sweetness	Sweet taste across the mouth	Muscadet	Sauternes · Tokaji aszú
Acidity	Sourness and mouth-watering	Viognier · Gewürztraminer	Mosel Kabinett · Sancerre · Vinho Verde
Tannin	Drying grip in the mouth	Beaujolais · Pinot Noir	Young Barolo · Madiran · Napa Cabernet
Alcohol	Warmth, back of the throat	Vinho Verde ~10% · Kabinett ~8.5%	Amarone ~15.5% · Zinfandel · Châteauneuf-du-Pape
Body	Weight, the milk scale	Muscadet · Beaujolais	Barrel-aged Chardonnay · Barossa Shiraz

You can spread these comparisons across ordinary dinners. A Muscadet often combines a dry taste with light body, while a sweet Mosel Kabinett can combine noticeable acidity with low alcohol. Check the bottle: Kabinett alone does not guarantee sweetness or low strength. Keep notes and revisit the comparisons as your impressions develop.

How sensations affect each other

sweetness can change how acidity feels

Each trait can affect how you perceive the others. Sugar can make acidity seem gentler; acidity can keep sweetness from feeling heavy. This is why a laboratory measurement and your impression of the wine answer different questions.

Interactions to explore by tasting; the effect depends on the wine, food and serving temperature

Sugar can soften sourness. Try a little lemon juice in water, then add sugar and taste again. You have not removed the acid, but the balance of sensations changes. The same principle helps explain why a sweet wine can contain plenty of acidity without tasting sharply sour.

Adding sugar to lemon water changes how sour it tastes without removing the acid.

try lemon water before and after adding sugar

Acidity changes the impression of sweetness. A Sauternes can feel fresh as well as sweet. Judge the relationship in your glass: sugar content and price alone cannot tell you whether you will find a wine balanced or cloying.

Food can change how tannin feels. Try a firm red on its own, then with steak, hard cheese or braised beef. Notice whether the drying grip feels softer with the food. The comparison helps you judge the wine as you will drink it over dinner.

Alcohol can contribute sweetness and body. Ethanol can taste faintly sweet and add weight, so a bone-dry 15% Zinfandel may seem sweeter than its sugar content suggests. The nose-pinch comparison can help you focus on the sensation, but it cannot establish the sugar content.

Temperature changes aroma and taste. A very cold white may seem less sweet and aromatic; an overly warm red may seem dominated by alcohol. Compare two small pours at different temperatures and notice what changes.

Balance describes how the traits work together: whether any one sensation dominates in a way you find unpleasant. Serving temperature can change that impression. Try fifteen minutes in the fridge for an overly warm red, or ten minutes on the counter for a white whose aromas seem muted, then taste again.

Reading structure off the label

ABV tells you alcohol; taste to judge body

The alcohol percentage on a label can help you anticipate warmth and body. Because alcohol comes from fermented sugar, it can also suggest ripeness and, in certain wines, residual sugar. Use it to form a question for tasting, not to decide the answer in the shop.

German Riesling is a useful case. The grape ripens with plenty of acidity, and the winemaker can choose where fermentation stops. Alcohol can offer clues in some German Riesling, but check the label and taste rather than treating the number as decisive.

In German Riesling, the alcohol number can be a useful clue, but it cannot replace tasting or the rest of the label.

alcohol is one clue, alongside label and taste

In many dry wines, alcohol also helps you anticipate body and warmth: compare a 12% bottle with a 14.5% bottle, then check whether your impression agrees. Consider these details alongside the number:

The region suggests growing conditions. Cool places such as Mosel, Loire, Chablis and Tasmania often give wines with higher acidity, lighter body and lower alcohol. Warmer places such as Barossa, southern Italy and much of California often give riper fruit and fuller wines. Producer choices and the harvest year can change that pattern.
Grape varieties have familiar traits. Riesling and Sauvignon Blanc often run high in acid; Viognier and Gewürztraminer can run plush and strong; Cabernet, Nebbiolo and Tannat often bring tannin; Gamay is often lower in tannin than Cabernet or Nebbiolo, though style and extraction can change the feel. Learn a dozen defaults and every varietal label becomes a starting point.
Vintage can change the balance. In marginal regions (Mosel, Burgundy, the Loire, England) the year rewrites the wine: a cold year can give higher acidity and less alcohol than a hot one. In sunnier places such as Mendoza or Barossa, ripening may be more reliable, but the year still deserves attention when comparing particular bottles.

The label gives you questions to explore when you taste: how much acidity and body does the wine have, how warm does the alcohol feel, and is there sweetness? Check your expectations against the bottle.

Texture

fabric words help describe texture

Alongside the six traits, notice texture: the way the wine moves across your tongue. Body describes weight and fullness; texture lets you describe its smoothness, grip or coating feel. Two wines can match on every scale in this chapter and still feel as different as silk and corduroy. Use texture words to describe the sensation before assigning a cause.

Silky: friction-free, seamless. It may describe fine, unobtrusive tannin, as you might find in Pinot Noir and old Rioja.
Oily: viscous and coating, like a teaspoon of olive oil. This describes a sensation rather than identifying one chemical cause. Alsace Pinot Gris and Viognier are the reference points. Some drinkers enjoy the coating sensation; others find it slippery. I'm in the luxury camp.
Chalky: a fine, dusty drag, as if the wine carried a pinch of powdered limestone. You may use it for fine astringency in a red such as Sangiovese, or for some whites with a little grip. It does not show that limestone has passed from soil to glass.
Creamy: rounded in texture, as you may notice in a Chardonnay aged on lees. Malolactic fermentation can soften acidity; a buttery aroma is a separate observation.
Spritzy: a faint prickle in a still white, from dissolved carbon dioxide, which may be retained from fermentation or added. In Vinho Verde, Muscadet and young Grüner Veltliner it can be intentional. Unexpected fizz in a wine meant to be still deserves a closer look.

Fabric words such as silk and suede can help you describe texture. Use one when it names a sensation you can compare with the next wine.

How the traits work together

Judge the finish and flavour intensity alongside these ideas. Balance: how the traits feel together and whether one overwhelms the others. Complexity: how many distinct things you can find, and whether they keep changing. Typicity: does the wine taste like what it claims to be; does the Chablis actually taste of Chablis?

A simple wine can be enjoyable when its traits work well together. More aromas or stronger flavours do not automatically make it better. Consider the whole glass, then use the next chapters to explore how those traits develop.

Well-made and for you are separate judgements. You can taste a wine, register that it's balanced, complex and exactly true to its home, award it full marks in your head, and still not want a second glass. Recognising quality does not oblige you to enjoy a style or buy it again.

The flip side: your palate is not a fixed instrument. Your preferences can change with familiarity and experience. The wine you swore off at twenty-five may be your favourite at forty. Keep a private blacklist if you must, but audit it. I retaste something I “hate” every few months, and the rate at which old enemies turn into friends is frankly embarrassing. Keep the comparisons open as your preferences develop.

Further reading: acidity, tannin and wine assessment

Test yourself

Five questions, no points awarded

A wine dries your gums. Which trait is speaking?

Where is high alcohol easiest to notice?

Which comparison best helps you judge body?

When do you measure a wine's finish?

Which quality is non-negotiable when judging the whole wine?

0 of 5.

What to keep

Six traits help you describe wine: sweetness, acidity, tannin, alcohol, body, finish.
A dry taste need not mean zero sugar; acidity and other sensations affect the impression.
Tannin is a texture, not a taste: it dries your gums like over-steeped tea.
Body is weight on the palate, skimmed milk to whole milk.
Notice how long pleasant flavours last. Assess the finish alongside balance and character.

Words you metBody Structure Balance Astringent Residual sugar Hot

next: where all of this comes from