The Specialty Coffee Association (SCA) cupping protocol is the global standard for evaluating coffee quality, used by green coffee buyers, roasters, Q-graders, and barista competition judges worldwide. It establishes the conditions, methodology, and scoring rubric for coffee assessment in a format that is reproducible, calibrated, and internationally recognised. The SCA cupping form scores 10 attributes on a 6-point scale (each attribute scored 6–10, with 6 being the floor of 'good'), producing a total quality score out of 100 points. Coffees scoring 80+ are classified as specialty grade. The Q-grader certification — administered by the Coffee Quality Institute (CQI) — is the professional credential for coffee evaluators and requires passing 22 separate exams covering cupping, grading, sensory triangulation, and green coffee assessment. Q-graders must be recertified every three years through calibration cupping. The Q-grader is to coffee what the Master of Wine is to wine: the highest professional evaluation credential. Cupping is distinct from brewing: the protocol strips away brewing variables (grind consistency, extraction pressure, brew ratio variation) to evaluate the coffee as a commodity. Ground coffee is steeped in hot water in an open bowl; crust is broken at a specific moment; the liquid is tasted with a cupping spoon, slurped loudly to aerate the coffee across all taste receptors simultaneously.
SCA CUPPING PROTOCOL — PROCEDURE Preparation: Grind size: Medium-coarse (similar to drip; not espresso). Grind immediately before cupping (within 15 minutes). Water temperature: 93°C ± 1°C (off the boil — boiling water over-extracts and scalds). Ratio: 8.25g coffee per 150ml water (approximately 1:18 ratio). Cups: Minimum 5 cups per sample (for consistency assessment — uniformity is one of the ten scored attributes). Minimum 2 cups at 15 minutes before evaluation begins. Coffees should be evaluated at the same stage of rest post-roast (8–24 hours; avoid evaluating within 8 hours or after 3 weeks from roast). Evaluation sequence: Step 1 — Dry fragrance (3–5 minutes after grinding): Nose the ground coffee dry. This captures the most volatile aromatics. Step 2 — Wet aroma (immediately after pouring water): Pour water at 93°C. Do not stir. Nose the wet crust forming on the surface. The crust concentrates aromatics. Step 3 — Break (4 minutes after pouring): Break the crust with the cupping spoon, pushing grounds to the back. Deeply inhale the escaping steam. This is the peak aromatic moment. Step 4 — Evaluate at multiple temperatures: Begin tasting once the coffee reaches approximately 70°C (warm, not scalding). Re-evaluate at 60°C (mid-temperature reveals different attributes — acidity becomes more apparent). Re-evaluate at room temperature (cool coffee reveals sweetness and balance most accurately). Quality coffees improve or maintain as they cool; poor coffees deteriorate. SCA CUPPING FORM — 10 SCORED ATTRIBUTES 1. FRAGRANCE/AROMA (6–10 points) Evaluate dry fragrance and wet aroma together. The SCA Flavour Wheel provides vocabulary: Floral: Jasmine, rose, chamomile, elderflower, orange blossom (high-grown Ethiopian, some Panamanian Gesha). Fruity: Berry (strawberry, blueberry, raspberry — natural process), stone fruit (peach, apricot — washed Ethiopian), citrus (lemon, lime, grapefruit — high-altitude washed), tropical (mango, passion fruit, pineapple — anaerobic process). Nutty/Cocoa: Hazelnut, almond, dark chocolate, milk chocolate (Brazilian naturals, some Colombians). Sweet: Caramel, brown sugar, maple, honey, vanilla. Vegetal/Herbal: Green tea, herbs, tomato — often indicates under-development or specific processing. Spice: Black pepper, cinnamon, cardamom. Earthy/Musty: Potato defect, earthy, mushroom — often indicates defect or robusta contamination. 2. FLAVOUR (6–10 points) What is experienced from first sip through the mid-palate? The interaction of all taste, aroma, and mouthfeel elements. Primary taste dimensions: sweetness, acidity, bitterness. Note complexity, intensity, and desirability of flavour. 3. AFTERTASTE (6–10 points) Length and quality of flavour after swallowing. Long, positive aftertaste (chocolate, fruit, floral residual) = high score. Short or negative (astringent, bitter, sour) = low score. 4. ACIDITY (6–10 points) Quality AND intensity. Evaluate desirability: is the acidity bright and pleasant (malic, citric) or unpleasant (acetic, ferment-derived)? Rate both intensity (low/medium/high) and quality. High-altitude washed coffees = bright, clean acidity. Natural process = lower acidity, sweeter. Robusta = flat, harsh. SCA pH range for specialty: approximately 4.8–5.5. 5. BODY (6–10 points) Mouthfeel — weight, viscosity, texture. Full body (Indonesia Sumatra Mandheling — heavy, syrupy, low-acid) vs light body (Ethiopian washed — delicate, tea-like). Note: body is independent of strength; it relates to soluble solid content and oil levels. 6. BALANCE (6–10 points) Do flavour, aftertaste, acidity, and body complement each other, or does one element dominate distractingly? A perfectly balanced specialty coffee shows all elements in harmony with no single dimension overshadowing another. 7. SWEETNESS (6–10 points) Each of the 5 cups evaluated independently (max 2 points per cup = 10 points across 5 cups). Any cup without sweetness = 0 for that cup. Sweetness is a mark of ripe cherry, proper processing, and correct roast. Underripe or over-roasted coffee lacks sweetness. 8. CLEAN CUP (6–10 points) Each of 5 cups evaluated independently (max 2 per cup). Any tainting aroma or flavour that is not part of the coffee's intrinsic character = mark down. Ferment, mould, phenol, rubber, or any foreign taste. 9. UNIFORMITY (6–10 points) Each of 5 cups. Are all cups consistent? Variation between cups indicates inconsistent processing (drying, picking) or grading failure. 10. OVERALL (6–10 points) Holistic assessment. Does this coffee exceed the sum of its parts? Is it memorable? Would you pay a premium price for this lot? TOTAL SCORE CALCULATION Sum all 10 attributes. Subtract defects (Category 1 defects: 2 points each; Category 2: 4 points each). Scoring scale: 90–100 = outstanding; 85–89.99 = excellent; 80–84.99 = very good (specialty threshold) · Under 80 = not specialty. DEFECT IDENTIFICATION Quakers: Unripe, undeveloped beans — pale, chalky, peanut/cereal flavour. Indicate improper picking or sorting. Past crop: Woody, cardboard, paper bag — stale green coffee (beyond 1 crop year). Ferment/Sour: Vinegary, yoghurt, onion — over-fermented in processing. Phenol: Plastic, rubber, medicinal — contamination during processing or transport. Potato defect (East African): Raw potato aroma — caused by Antestia bug damage, lactic acid bacterial infection of the cherry. ROAST ASSESSMENT Roast level (Agtron scale, 0=black to 100=green): Light (70–95): Maximum origin character, high acidity, light body. Medium (55–70): Balance of origin and roast character. Dark (25–45): Roast character dominates; bitter, low acidity, heavy body. The SCA recommends cupping at Medium roast (Agtron 55–65) to evaluate origin character without roast interference.
1. Build your sensory reference library: taste reference standards for each primary flavour category on the SCA Flavour Wheel. Strawberry jam (red berry natural process), citrus peel (washed Ethiopian), caramel (medium roast Colombian) — taste them before cupping to calibrate your descriptors. 2. Slurp loudly — aeration sprays the coffee across all taste receptors simultaneously and volatilises aromatics retronasally. The loud slurp is not poor manners; it is mandatory technique for accurate evaluation. 3. For Q-grader preparation: the SCA triangle test (identifying the odd sample in a set of three) requires a difference threshold of p<0.05 across 8 sets. Practise sensory discrimination tests weekly. 4. Evaluate coffees at multiple temperatures systematically — build the habit of noting separate scores at warm, mid, and cool. High-quality coffees reveal new positive dimensions as they cool; poor coffees deteriorate. 5. Calibration is everything at the professional level — cup alongside Q-graders and compare scores for the same lot. Disagreements reveal calibration errors. Industry-wide calibration sessions (competitions, trade events) are how professionals maintain accuracy. 6. For MS exam coffee knowledge: know the major growing regions and their characteristic profiles. Ethiopia (washed): floral, citrus, bright acidity. Ethiopia (natural): berry, fruit, heavy body. Kenya (washed): blackcurrant, tomato, bright acid. Colombia: balanced, caramel, fruit. Indonesia (Sumatra): earthy, full body, low acid. Guatemala: dark chocolate, balanced, mild. 7. Understand process impact on flavour: Washed (wet) = clean, bright, terroir-expressive. Natural (dry) = fruity, heavy body, lower acidity. Honey process = between washed and natural; fruit notes with more clarity than natural. Anaerobic = intense, complex, fermented notes. 8. The SCA Flavour Wheel (developed with World Coffee Research) is the standard vocabulary reference — know the three tiers: main categories (fruity, floral, nutty, cocoa, spicy, etc.), subcategories, and specific descriptors. This is the controlled vocabulary for all professional cupping documentation.
1. Evaluating fragrance immediately after pouring (not allowing the 4-minute crust to form) — the crust concentrates aromatics; breaking it too early misses the peak aromatic moment. 2. Tasting too hot — coffee above 75°C presents primarily bitterness and suppresses sweetness and fruity acidity. Sip at 65–70°C for a balanced initial read; re-evaluate at room temperature. 3. Marking down natural-process coffee for 'ferment' character — ripe, clean, intentional fruit notes from natural processing are not defects; off-putting, vinegary, or yoghurt notes are. 4. Confusing body with strength — strength (TDS, total dissolved solids) is a brew ratio variable; body is a sensory characteristic of the coffee itself. High body can occur at any brew strength. 5. Failing to evaluate uniformity consistently across all 5 cups — evaluators often taste 2–3 cups and assume consistency. Variation in the remaining cups is a real processing flaw. 6. Using the flavour wheel superficially without calibration — 'fruity' is not specific enough for SCA cupping. 'Strawberry, raspberry, fermented stone fruit' requires calibration with reference samples. 7. Evaluating dark-roasted coffee and attributing all flavour to origin — at roast levels above Agtron 45, origin character is largely destroyed by Maillard reaction and caramelisation products. Describe what is there, not what the origin 'should' taste like. 8. Not allowing the recommended post-roast rest (8–24 hours) — coffee roasted within 8 hours degasses CO₂ which disrupts extraction and evaluation accuracy; CO₂ creates a false perception of freshness and can cause inconsistent results.
Specialty Coffee Association