Introduction:Want to master the cupping skills essential for professional baristas? This article provides a comprehensive breakdown of the two internationally authoritative cupping systems—COE and SCAA. It details the scoring criteria, deduction rules, and standard cupping procedures for attributes such as cleanliness, sweetness, acidity, flavor, and overall balance. Through real-world examples, it also explores how different roast profiles influence coffee performance, helping you evolve from a consumer into an expert capable of scientifically evaluating coffee.
To become a professional barista, cupping ability is undoubtedly a core skill. This article introduces the two mainstream global cupping scoring systems—COE and SCAA—in an easy-to-understand way. It analyzes the scoring logic and professional judgment points for attributes such as aroma, cleanliness, sweetness, acidity, mouthfeel, flavor, aftertaste, and overall balance, supplemented with practical operational details. This helps you not only understand scoring but truly appreciate the essence of coffee.
Whether you're a beginner exploring professional cupping or a coffee professional already in the industry, this article will equip you with the methods for scientifically evaluating coffee quality, provide insight into the true evaluation standards of COE competition-level coffee, and teach you how to identify the impact of different roast profiles on flavor through practical case studies.
What is COE? The Premier Competition Mechanism for Specialty Coffee
In the world of wine, we hear about AOC classifications, while in the coffee realm, COE (Cup of Excellence) is the pinnacle evaluation standard for specialty coffee. COE is a competition mechanism jointly promoted by the world’s ten major coffee-producing countries, aimed at discovering and honoring farms that produce exceptional coffee. A panel of international senior cuppers conducts at least five rounds of rigorous cupping over approximately three weeks, with only the top ten coffees emerging victorious—some even advancing to additional rounds. Winning coffees not only receive international recognition but can also fetch attractive prices through auctions, thereby encouraging farmers to continuously improve quality and enabling consumers to enjoy higher-standard coffee.
The Seven Key Scoring Categories of COE Cupping
COE cupping focuses on the following core elements: aroma (recorded only, not included in the total score), cleanliness, sweetness, acidity, mouthfeel, flavor, aftertaste, and overall balance, plus an overall evaluation.
Cleanliness (Clean Cup) This is the entry threshold for specialty coffee, meaning the coffee has absolutely no unpleasant off-flavors or defects, such as earthiness, medicinal notes, fermentation stink, rubberiness, or astringency. The presence of any negative flavor directly impacts the cleanliness score.
Sweetness (Sweetness) This not only indicates that the coffee cherries were harvested at optimal ripeness but also reflects the overall processing and green bean quality. Truly high-quality sweetness can manifest as cane sugar sweetness, caramel sweetness, and more. If the sweetness is fleeting or astringent, it usually struggles to exceed 6 points.
Acidity (Acidity) This is a key indicator for assessing a coffee’s vibrancy and layering. Good acidity should be bright and pleasant, like citrus, berries, cantaloupe, or green apple—not the sharpness of vinegar or the unpleasantness of fermented fruit acidity.
Mouthfeel (Mouth Feel) This is unrelated to taste but refers to the texture and weight sensation of coffee in the mouth, such as silky, rich, light, or viscous.
Flavor (Flavor) This is the combined taste perceived from the nasal cavity to the mouth during slurping, encompassing aroma, taste, and texture. Since COE cups multiple samples at once, dry fragrance is often not evaluated alone, but the flavor category fully captures the coffee’s diverse characteristics.
Aftertaste (Aftertaste) This refers to the persistence and pleasantness of aroma and taste remaining in the mouth after swallowing. High-quality coffee often has a long-lasting and enjoyable aftertaste that extends sweetness or layers of flavor.
Balance (Balance) This refers to whether acidity, sweetness, bitterness, mouthfeel, and other elements complement each other harmoniously without being jarring or unbalanced.
Overall Evaluation (Overall) This is the cupper’s subjective overall impression of the coffee—whether they liked it, whether it was memorable—all reflected in this category.
COE Scoring Scale and Competition Thresholds
COE uses a 100-point scale, where:
• 69 points and below: Industrial or commercial-grade low-quality beans
• 70–74 points: General commercial beans
• 75–79 points: High-end commercial beans
• 80–84 points: Enter the specialty coffee grade
• 85 points and above: Belong to the COE competition level, i.e., the so-called Cup of Excellence-winning coffees, which are internationally recognized as top-tier.
A special note: COE has extremely strict requirements for cleanliness, and while aroma and wet aroma are important indicators, they are not included in the total score. Sweetness and mouthfeel (formerly called body) also significantly affect overall performance, with high sweetness typically reflecting superior growing and processing environments, thus encouraged in scoring.
SCAA Cupping: Another International Standard
The SCAA (Specialty Coffee Association of America, now merged into SCA) cupping system includes ten scoring categories, featuring two not found in COE: ‘Fragrance/Aroma’ and ‘Uniformity.’
In the SCAA scoring sheet, the base score starts at 6, divided into four major grades: ‘Good,’ ‘Very Good,’ ‘Excellent,’ and ‘Outstanding,’ each further subdivided by 0.25 points, totaling 16 scoring increments.
Additionally, SCAA has clear deduction rules for defects: minor flaws (e.g., slight off-odors) deduct 2 points per cup, while major defects (e.g., obvious foul tastes) deduct 4 points per cup. If the total score, after deducting defect points, exceeds 80, it qualifies as specialty coffee, further subdivided into Very Good, Superior, and Outstanding tiers.
Cupping Tools and Standard Procedures
Whether using the COE or SCAA system, the basic cupping tools are largely the same, including a grinder, electronic scale, thermometer, cupping bowls (capacity 207–266ml, ceramic or tempered glass material, rim diameter ~76–89mm, height 3–3.5 inches), specialized cupping spoons (stainless steel anti-static material, 4–5ml capacity per spoon), and a standard coffee-to-water ratio of 8.25g coffee powder to 150ml water, with water temperature controlled at 92.2–94.4°C.
Practical Case: Cupping Three Roast Profiles of a Brand’s Golden Mandheling
Taking 【Golden Mandheling】 as an example, cupping three different roast profiles (drop temperatures of 201°C, 202°C, and 204°C) using the COE scoring sheet clearly reveals the impact of roast degree on flavor.
Profile ① exhibits pronounced milk chocolate and caramel aromas, with berry and osmanthus notes on slurp, but slight earthiness and rubberiness; Profile ② leans toward woody and spicy flavors, with herbal and caramel characteristics on slurp; Profile ③ showcases rounder spice, osmanthus, and herbal aromas, with layered flavors of preserved plum, almond, dried fruit, and caramel on slurp. It outperforms the first two in cleanliness, acidity, sweetness, and mouthfeel, demonstrating that appropriate roast development critically influences a coffee’s overall performance.
During cupping, it’s recommended to rinse your mouth with water and clean the cupping spoon with ice water after each coffee to avoid flavor interference. Also, remember to spit out most of the coffee liquid but swallow a small amount to sense the aftertaste, and continue evaluating as the coffee cools to room temperature. Before each tasting, reset your taste memory as much as possible to ensure objective evaluation.
Through systematic cupping training, you’ll be able to analyze the uniqueness of each coffee from a professional perspective—whether selecting beans, evaluating roasts, or understanding the evaluation logic of competition-level specialty coffee, you’ll gain valuable insights.
The above content is compiled by CoffeeHunters, a coffee news website.
