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OCC Journal / Tag

Science & Quality

390 articles

Science & Quality

Fine Robusta Body and Texture: Why Mouthfeel Matters

Evidence-led explanation of why Fine Robusta can show greater body than Arabica and which chemistry, roast, and extraction variables matter.

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Science & Quality

Chocolate, Nut, and Earth: Decoding Robusta's Flavor Wheel

Guide to chocolate, nut, earth, and related Robusta flavor descriptors, including how processing, roast, and defects can shift sensory expression.

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Science & Quality

Understanding the CQI Cupping Form for Robusta

Guide to understanding the CQI cupping form for Robusta, including key attributes, scoring areas, defects, and practical interpretation.

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Science & Quality

Uganda and the Birth of Fine Robusta Standards

9. Uganda and the Birth of Fine Robusta Standards Introduction Uganda holds a uniquely central place in Fine Robusta's history — both as a native origin region for the species and as the birthplace of its formal quality standards. Why This Matters...

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Science & Quality

How Quality Standards Support Direct Trade Coffee Relationships

19. CQI Standards in Direct Trade Coffee Relationships Introduction Direct trade relationships, where roasters buy straight from producers without traditional intermediaries, still rely heavily on CQI-originated standards to function smoothly. Why This...

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Science & Quality

Becoming an SCA Q Grader in 2026: Course, Exams and License

Overview of what is involved in becoming a certified Robusta Q Grader, including training, calibration, evaluation skills, and certification.

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Science & Quality

Fine Robusta Defects: What Buyers Should Check Before Cupping

Fine Robusta physical defects require a representative sample, named grading method, recorded counts and a separate cup evaluation. Historical CQI and current SCA frameworks are distinguished.

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Science & Quality

Fine Robusta Explained: Genetics, Growing Conditions, and Cup Quality

Fine Robusta explained through Coffea canephora genetics, growing conditions, processing, physical quality, and cup performance.

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Science & Quality

Coffee Quality Evaluation: A Guide for Buyers

Buyer-focused guide to coffee quality evaluation, including green inspection, cupping, scoring, defects, consistency, and supplier verification.

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Science & Quality

How to Read Historical CQI Robusta Cupping Reports in 2026

Buyer-focused guide to reading CQI Robusta cupping reports, understanding scores, attributes, and the limits of a single evaluation.

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Science & Quality

Understanding the Coffee Quality Evaluation Process

Guide to the coffee quality evaluation process, including physical inspection, sample roasting, cupping, scoring, and interpretation.

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Science & Quality

Arabica vs Fine Robusta for Buyers: Price, Use Case and Evidence

A buyer-focused comparison of Arabica and Fine Robusta based on product role, sensory evidence, consistency, current quotes and total procurement economics.

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Science & Quality

Fine Robusta Aroma: What Buyers Should Look for Before the First Sip

Guide to Fine Robusta aroma profiles and the sensory descriptors buyers, roasters, and cuppers may encounter.

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Science & Quality

The Flavor Profile of Fine Robusta: What to Expect

Guide to the flavor profile of Fine Robusta, including body, sweetness, acidity, bitterness, aroma, and common sensory descriptors.

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Science & Quality

Bitterness in Robusta: Fact vs Misconception

Evidence-led explanation of bitterness in Robusta, separating species stereotypes from roast, extraction, defects, processing, and lot quality.

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Science & Quality

What Makes a Coffee Score High in Quality Evaluation

Explanation of what can drive higher coffee quality scores, including green quality, processing, roasting, and sensory performance.

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Science & Quality

CQI Fine Robusta Grading Criteria Explained: Historical Protocol, Current Q Context, and Buyer Use

A 2026 reference to CQI Fine Robusta grading criteria, separating historical Fine Robusta protocols, the current CQI Q Coffee sample workflow, and SCA’s current Q Grader/CVA context for buyers.

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Science & Quality

How Cupping Determines Coffee Quality

Guide to how cupping contributes to coffee quality assessment, what sensory evaluation can reveal, and where its limitations begin.

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Science & Quality

How Defect Counting Works in Coffee Grading: Sample Size, Equivalencies, and Buyer QC

A method-specific guide to coffee defect counting: sample size, defect categories, equivalencies, calibration, physical QC, and why defect numbers must stay attached to a named grading protocol and lot.

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Science & Quality

How Altitude and Terroir Affect Coffee Quality

Evidence-led guide to how altitude and terroir can affect coffee quality through climate, plant development, processing, and cup expression.

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Science & Quality

The History of the CQI Fine Robusta Protocol

A concise history of the CQI Fine Robusta protocol and its role in the development of higher-quality Robusta evaluation.

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Science & Quality

How Climate Affects Coffee Quality Evaluation Outcomes

Evidence-led guide to how climate can affect coffee quality evaluation through growing conditions, harvest, processing, and lot variation.

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Science & Quality

How Professional Cuppers Evaluate Coffee Quality

Guide to how professional cuppers evaluate coffee quality through standardized preparation, sensory assessment, calibration, and scoring.

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Science & Quality

The History and Mission of the Coffee Quality Institute

3. The History and Mission of the Coffee Quality Institute Introduction CQI's history is really the history of how the coffee industry learned to talk about quality in a common language — a project that began in 1996 and is still evolving today. Why This...

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