Systematic Approach to Tasting
The WSET Level 3 SAT in full — structured assessment, aroma classification, quality framework, and the science of wine faults.
The Purpose of Systematic Tasting
The WSET Systematic Approach to Tasting exists to transform subjective sensation into structured, communicable assessment. It is not about performing a ritual — it is about building an evidence base from which to draw conclusions about a wine's identity, quality, and readiness.
At Level 3, the SAT becomes more granular than at Level 2. The vocabulary expands, the scales become finer, and the taster is expected to assess quality with precision and justify the assessment with specific evidence from their notes. The separation between description (what you perceive) and assessment (what it means) is fundamental.
Appearance
Hold the glass at 45° against a white background. You are recording evidence, not making aesthetic judgments.
Clarity
Clear or hazy. Most wines should be clear. Haziness can indicate a fault (protein instability, microbial spoilage) or a deliberate choice (unfiltered, natural wines). Context determines interpretation.
Intensity
Pale, medium, or deep. Colour intensity correlates broadly with body and extraction. A deep, inky red is likely a thick-skinned variety (Cabernet Sauvignon, Syrah, Malbec) or the product of extended maceration. A pale red is likely Pinot Noir, Nebbiolo, or Gamay — thin-skinned grapes that produce translucent wines.
Colour
| White | Indicates | Red | Indicates |
|---|---|---|---|
| Lemon-green | Very young, cool climate | Purple | Very young |
| Lemon | Young | Ruby | Youthful, most common |
| Gold | Riper, oak-aged, or slightly aged | Garnet | Maturing |
| Amber | Significantly aged, oxidised, or sweet | Tawny | Significantly aged |
| Brown | Very old or faulty | Brown | Very old or faulty |
White wines darken with age (oxidation). Red wines lighten (anthocyanin polymerisation and precipitation). This is one of the most reliable age indicators.
Other Observations
- Viscosity / legs: Higher alcohol or residual sugar produces more pronounced legs. Not a quality indicator
- Pétillance: Unexpected bubbles in a still wine may indicate refermentation (fault) or deliberate spritz (Vinho Verde)
- Deposit: Sediment in an older red wine is natural (tannin polymerisation) and expected
Nose
Swirl the glass to volatilise aromatic compounds, then assess.
Condition
Clean or faulty. If faulty, identify the fault (see Wine Faults below). This is the first and most consequential assessment on the nose — everything that follows is meaningless if the wine is faulty.
Intensity
Five-point scale at Level 3: light, medium(-), medium, medium(+), pronounced.
Aromatic varieties (Gewürztraminer, Sauvignon Blanc, Muscat) tend toward pronounced. Neutral varieties (Pinot Grigio, Melon de Bourgogne) tend toward light or medium(-). Intensity does not equal quality.
Aroma Characteristics
Identify specific descriptors and classify them into three tiers:
Primary Aromas — From the Grape
These are varietal and terroir-driven. They reflect the grape variety and its growing environment.
| Category | Examples |
|---|---|
| Floral | Rose, violet, jasmine, elderflower, blossom, lavender |
| Green fruit | Apple, gooseberry, pear, quince |
| Citrus | Grapefruit, lemon, lime, orange zest |
| Stone fruit | Peach, apricot, nectarine |
| Tropical fruit | Mango, pineapple, passion fruit, lychee |
| Red fruit | Cherry, strawberry, raspberry, red plum, redcurrant |
| Black fruit | Blackberry, blackcurrant, black plum, blueberry |
| Herbal | Grass, bell pepper, tomato leaf, eucalyptus, mint |
| Spice | Black pepper, liquorice (grape-derived, not oak) |
| Earth | Slate, wet gravel, volcanic rock |
Varietal markers: Cabernet Sauvignon = blackcurrant + green pepper (pyrazines). Gewürztraminer = lychee + rose (terpenes). Sauvignon Blanc = gooseberry + cut grass (thiols). Riesling = lime + petrol with age (TDN).
Secondary Aromas — From Winemaking
| Source | Aromas |
|---|---|
| Alcoholic fermentation (yeast) | Bread, biscuit, brioche, sourdough, toast |
| Malolactic conversion | Butter, cream, cheese, yoghurt |
| Lees contact (autolysis) | Bread dough, pastry, biscuit, umami |
Tertiary Aromas — From Aging
| Source | Aromas |
|---|---|
| Oak aging | Vanilla, coconut, cedar, smoke, clove, nutmeg, toast, cigar box |
| Oxidative bottle aging | Nutty, caramel, honey, marmalade, coffee, toffee |
| Reductive bottle aging | Leather, earth, mushroom, truffle, forest floor, game, tobacco |
| Dried fruit | Fig, raisin, prune, dried apricot |
Development
Youthful (primary aromas dominate), developing (secondary/tertiary emerging alongside primary), fully developed (tertiary aromas dominate, primary receding), tired (aromas fading, past peak).
Palate
Take a sip. Let the wine coat your mouth. Assess systematically.
Sweetness
Six-point scale: dry, off-dry, medium-dry, medium-sweet, sweet, luscious.
Distinguish actual residual sugar from perceived sweetness caused by ripe fruit, high alcohol, or glycerol. A dry wine can taste "sweet" if the fruit is very ripe.
Acidity
Five-point scale: low, medium(-), medium, medium(+), high.
Acidity is the wine's freshness and vibrancy. It makes your mouth water. High acidity preserves wine for aging and balances sweetness. Low acidity feels soft, round, and can tip into flabby if insufficiently balanced.
Tannin (Red Wines)
Five-point scale: low, medium(-), medium, medium(+), high.
Assess both level (how much tannin) and quality: ripe tannins feel fine-grained and silky; unripe tannins feel green, harsh, and astringent. Tannin quality is as important as tannin quantity.
Alcohol
Low (< 11%), medium (11–13.9%), high (14%+).
Alcohol contributes body, warmth, and viscosity. If alcohol feels "hot" or burning on the finish, it may be out of balance with the wine's other components.
Body
Five-point scale: light, medium(-), medium, medium(+), full.
Body is the combined impression of alcohol, sugar, tannin, and extract — the weight and viscosity of the wine in your mouth.
Flavour Intensity and Characteristics
Intensity on the five-point scale. Flavour characteristics should align with and confirm what you found on the nose, though new impressions often emerge on the palate — particularly textural qualities (creaminess, minerality, grip) and retronasal aromatics (flavours perceived through the back of the mouth).
Finish
Five-point scale: short, medium(-), medium, medium(+), long.
Length is among the most reliable quality indicators. Outstanding wines can show a finish of 15 seconds or more, with flavours that evolve as they linger — this evolution on the finish is what separates very good from outstanding.
Quality Assessment: The BLIC Framework
Quality is not preference. The WSET explicitly separates objective quality assessment from personal taste. A professionally well-made wine is assessed on four structural pillars:
| Pillar | Definition |
|---|---|
| Balance | Harmonious integration of all components — acidity, tannin, alcohol, fruit, sweetness. No single element dominates or protrudes |
| Length | Duration and evolution of flavour after swallowing. The single most important factor distinguishing very good from outstanding |
| Intensity | Concentration and depth of aromas and flavours. Note: the finest wines may show elegant restraint rather than sheer power |
| Complexity | Range and interplay of distinct aromas and flavours across primary, secondary, and tertiary tiers. Outstanding wines transcend varietal expectation |
Quality Levels
| Level | BLIC Profile | Description |
|---|---|---|
| Faulty | N/A | A noticeable fault renders further assessment meaningless |
| Poor | 0 of 4 | Fundamentally unbalanced, lacking fruit, short |
| Acceptable | ~1 of 4 | Correct but simple. Nothing wrong, nothing memorable |
| Good | ~2 of 4 | Sound, some interest, moderate complexity |
| Very Good | ~3 of 4 | Pronounced quality across most dimensions; long finish |
| Outstanding | 4 of 4 | All pillars fully resolved; memorable, evolving, profound |
When assessing quality, identify what prevents the wine from reaching the next level. This is the professional discipline: not "I like it" but "it lacks complexity on the finish" or "the tannin is slightly unresolved."
Wine Faults
A fault is a deviation from normal character caused by a specific chemical or microbiological problem. At Level 3, you must be able to identify the major faults by their sensory markers and understand their causes.
Cork Taint (TCA)
- Compound: 2,4,6-trichloroanisole
- Cause: Micro-organisms interacting with chlorine compounds in cork bark
- Aroma: Wet cardboard, damp basement, musty newspaper, wet dog
- Effect: Mutes fruit, flattens complexity. Even at sub-threshold levels, TCA suppresses aromatics
- Detection threshold: 2–4 ng/L (parts per trillion) — among the lowest of any sensory compound. Some individuals detect it at 1 ng/L
- Prevalence: ~2–3% of natural cork closures
- Fixable: No. Always a fault at any perceptible concentration
Oxidation
- Cause: Excessive oxygen exposure — poor seal, damaged cork, improper storage, depleted SO₂
- Visual: Whites turn deep gold to brown; reds lose vibrancy, shift toward brown/brick prematurely
- Aroma: Windfall apple, bruised fruit, flat cola, unintended sherry-like character, nuts
- Palate: Flat, lifeless. Advanced oxidation produces vinegar (acetic acid)
- Fixable: No. Prevention through proper SO₂ management, closure integrity, and storage conditions
Reduction
- Cause: Insufficient oxygen during winemaking or aging — the opposite of oxidation
- Compounds: Hydrogen sulphide (H₂S), mercaptans, disulphides
- Aroma: Struck match (mild H₂S), rubber, rotten eggs, garlic, cooked cabbage (severe)
- Fixable: Mild H₂S dissipates with 15–20 minutes of decanting or vigorous swirling. Mercaptans and disulphides are more persistent and may be permanent
Volatile Acidity (VA)
- Compounds: Acetic acid + ethyl acetate
- Cause: Acetobacter or Gluconobacter bacteria, typically from excessive oxygen exposure combined with warmth
- Aroma: Vinegar (acetic acid), nail polish remover (ethyl acetate)
- Threshold: Typically noticeable at > 0.7 g/L acetic acid in whites, > 1.0 g/L in reds. Legal limits vary by jurisdiction
- Note: Very low VA can actually enhance aromatic lift — some Italian and Rhône producers tolerate slightly elevated levels as a component of complexity
- Fixable: No
Brettanomyces
- Agent: Wild yeast Brettanomyces bruxellensis
- Compounds: 4-ethylphenol (4-EP), 4-ethylguaiacol (4-EG)
- Aroma: Band-aid, barnyard, horse stable, leather, sweat, medicinal
- Threshold: Perception varies enormously between individuals
- Controversy: Low levels are considered part of terroir character by some producers (traditional Rhône, parts of Burgundy). High levels are universally a fault
- Fixable: No. Prevention through cellar hygiene and SO₂ management
Lightstrike
- Cause: UV or blue light exposure
- Aroma: Wet wool, cooked cabbage, rotten eggs
- Vulnerable wines: Delicate whites in clear glass — Champagne, Pinot Grigio, Sauvignon Blanc
- Prevention: Dark glass bottles, proper storage away from fluorescent and direct light
- Fixable: No
Heat Damage
- Cause: Storage above ~25–30°C
- Visual indicators: Cork pushing out of bottle; seepage around closure
- Aroma: Stewed, jammy fruit; roasted nuts; caramel
- Palate: Disjointed; alcohol protrudes; fruit structure collapsed
- Ideal storage: 10–15°C, consistent temperature, away from vibration and light
- Fixable: No
Tasting Under Exam Conditions
At Level 3, the SAT is an exam tool. Efficiency and precision matter.
- Work through the grid in order: appearance → nose → palate → conclusions. Do not skip ahead
- Use the exact WSET vocabulary — "medium(+) acidity" not "quite acidic"
- Provide a minimum of five specific aroma/flavour descriptors on the nose
- Your quality assessment must be supported by evidence from your tasting notes. If you write "outstanding," your notes must show balance, length, intensity, and complexity
- Assess readiness: drink now, can drink now but has potential for aging, too young, or too old
The SAT is a professional skill. Like any skill, it sharpens with practice and dulls without it.
Key Facts
- The SAT separates description (what you perceive) from assessment (what it means) — professional tasting is evidence-based
- At Level 3, nose intensity uses a five-point scale: light, medium(-), medium, medium(+), pronounced
- Quality assessment rests on four pillars: balance, length, intensity, and complexity (BLIC)
- Cork taint (TCA) is detectable at 2-4 parts per trillion — one of the lowest sensory thresholds known
- The distinction between quality and preference is fundamental: a well-made Muscadet may be 'good' even if you prefer Napa Cabernet
Study Tips
- Use the SAT for every wine you taste, without exception — speed comes with repetition, not shortcuts
- Practise blind tasting regularly to remove label bias and force reliance on sensory evidence
- Build your aroma library physically: buy the actual fruits, spices, and flowers and smell them alongside wine
- When assessing quality, discipline yourself to justify the rating — what specific evidence supports 'very good' vs 'good'?