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Who Makes The
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Coffee Answers

EVERYTHING YOU EVER WANTED TO KNOW ABOUT COFFEE.

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Six coffee questions, answered without the attitude.

Plain-English answers drawn from the Specialty Coffee Association, World Coffee Research and the National Coffee Association. These explain general coffee knowledge, not the scores or identity of any untested coffee. The full searchable answer bank is available below when you need something more specific.

Are tasting notes ingredients added to coffee?

Usually not. Notes such as citrus, cocoa or jasmine describe aromas and flavors a taster perceives in brewed coffee; they are not an ingredient list. Flavored coffees are a separate category. A roaster's tasting notes are its descriptions, not proof that we independently tasted that bag.

Why this matters: A descriptive assessment records perceived sensory characteristics. It is separate from an evaluator's judgment of quality.

Explore the flavor wheelSource: Specialty Coffee Association — Coffee Value Assessment

What is the difference between washed, natural and honey coffee?

In broad terms, washed coffee is depulped and its mucilage is removed before drying; natural coffee dries inside the whole cherry; honey coffee is depulped but dried with some mucilage remaining. These process labels do not guarantee a particular flavor or a higher score.

Why this matters: Processing choices influence fermentation and drying, but variety, ripeness, handling and roasting also affect the cup.

Compare coffee processesSource: National Coffee Association — Coffee Processes

Is Arabica a coffee variety?

Arabica is a species, Coffea arabica. Bourbon, Typica, and many other named lines are varieties within that species. A variety name can help explain agronomic traits, but it cannot identify a farm or establish that a particular lot tastes a certain way.

Why this matters: Growing environment, plant health and postharvest decisions matter alongside genetics.

Understand coffee geneticsSource: World Coffee Research — Arabica catalog

Is dark roast stronger than light roast?

Dark roast can taste more bitter or intensely roasted, but that does not by itself mean it contains more caffeine. Roast color labels are not uniform across companies. Compare the same coffee brewed at the same dose before attributing flavor or strength to roast alone.

Why this matters: Roast degree affects flavor, while brewing dose and recipe affect the concentration in your cup.

Read the roasting guideSource: National Coffee Association — Coffee Roasts

How should I store whole-bean coffee?

Keep beans in an airtight, opaque container in a cool, dry, dark place, away from moisture and heat. Grind just before brewing when practical. Freshness depends on the roast, packaging and how the coffee has been stored; a single universal peak-freshness date is not reliable for every bag.

Why this matters: Air, light, warmth and moisture all speed flavor loss or create storage problems.

Explore brewing methodsSource: National Coffee Association — Storage and Shelf Life

Can one tasting score prove which coffee is best?

No. A score reflects a particular evaluation method, sample and taster or panel. The Specialty Coffee Association distinguishes sensory descriptions, judgments of quality, physical characteristics and information such as origin traceability. We publish our own scores only for coffees actually brewed and reviewed by us.

Why this matters: A competition result, a roaster's flavor description and an independent tasting score answer different questions; they should not be converted into one universal ranking.

How we research and rate coffeeSource: Specialty Coffee Association — Coffee Value Assessment

Research update · Genetics

Is Pink Bourbon actually a Bourbon?

Genetic tests reported by Cafe Imports in 2017 and 2023 indicate that sampled Pink Bourbon material belongs closer to Ethiopian landrace ancestry than the traditional Bourbon variety. The older Red × Yellow Bourbon origin story should not be repeated as established fact.

A farmer or roaster may use Pink Bourbon as the trade name for a pink-cherry coffee; a name and cherry color do not prove genetic parentage. Some tested samples had mixed markers, so the identity of any particular lot still needs evidence.

Read the corrected comparisonSource: Cafe Imports — Pink Bourbon genetics report (2023)

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COFFEE GRADINGAnswer

What is a 'density analyzer' for coffee?

A density analyzer is a piece of grading tech used to measure the mass of coffee beans relative to their volume. By determining bean consistency, these tools help roasters predict how heat will transfer through the beans during roasting. This quality control step allows for more precise roast profiles, ensuring that denser beans receive the appropriate energy input for optimal development.

COFFEE GRADINGSpecialty coffeeRoasting
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What is a 'clean cup' score in coffee grading?

A 'clean cup' score is a metric in sensory evaluation that assesses the absence of negative flavor attributes or defects. It measures flavor purity, ensuring the coffee is free from off-flavors like mold, fermentation, or chemical taints. This score is a fundamental component of the overall cupping score, reflecting the quality assessment of the coffee's clarity and overall cup profile.

COFFEE GRADINGCuppingSpecialty coffee
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What is a 'defect count' in coffee grading?

A defect count is a quality assessment method used to quantify bean flaws within a specific sample size, typically 350 grams. Based on SCA standards, graders categorize imperfections into primary and secondary defects to determine the coffee's grade. This process ensures that specialty coffee meets strict tolerance levels for consistency and flavor purity before reaching the roaster.

COFFEE GRADINGSpecialty coffeeCupping
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What is the 'defect count' for Grade 1 coffee?

For a coffee to be classified as Specialty Grade (often referred to as Grade 1), it must have zero primary defects and no more than five secondary defects in a 350-gram sample. These strict quality limits are defined by SCA standards to ensure that the coffee is free from significant flaws that would negatively impact the flavor profile.

COFFEE GRADINGSpecialty coffeeCupping
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What are 'broken beans' in coffee grading?

Broken beans are a type of physical defect in coffee grading caused by mechanical damage during processing, such as hulling or transport. These fragments are considered secondary defects because they roast at a different rate than whole beans, potentially leading to uneven development and off-flavors. Sorting criteria require these to be removed to maintain high quality control standards.

COFFEE GRADINGSpecialty coffeeCupping
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Does coffee grading change during storage?

Yes, coffee grading can change during storage due to quality degradation. Factors like humidity, temperature, and oxygen exposure can cause green coffee to lose its freshness, leading to a decline in cup score and physical appearance. Proper storage conditions are essential to maintain the shelf life and prevent the aging of coffee, which often results in a loss of acidity and flavor vibrancy.

COFFEE GRADINGWaterSpecialty coffee
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How to spot fermentation defects in beans?

Fermentation defects are identified through sensory analysis and visual inspection. During cupping, these flaws manifest as off-flavors like sour, vinegary, or 'stink' notes. Visually, beans may appear discolored, often showing a reddish or brownish tint, or have a wrinkled, shriveled surface. These processing flaws indicate improper fermentation control, which significantly impacts the quality assessment and overall cup score.

COFFEE GRADINGFermentationCupping
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What is 'physical grading' versus 'sensory grading'?

Physical grading involves inspecting green coffee for bean size, density, color, and defect counts to ensure consistency. Sensory grading, or cupping, evaluates the roasted coffee's flavor, aroma, and acidity to determine its quality. Both methods are essential quality assessment tools, providing a comprehensive report card that helps roasters understand how the coffee will perform and taste.

COFFEE GRADINGCuppingSpecialty coffee
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How are coffee samples prepared for grading?

Coffee samples are prepared for grading through a standardized cupping protocol. This involves roasting the green coffee to a specific color, grinding it to a precise particle size, and brewing it with water at a controlled temperature. This standardization ensures that the sensory evaluation is consistent, allowing graders to accurately assess the coffee's quality and flavor profile.

COFFEE GRADINGCuppingSpecialty coffee
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How to grade coffee based on acidity?

Grading coffee based on acidity is a key part of sensory evaluation during cupping. Graders assess the intensity, quality, and type of acidity—such as citric, malic, or tartaric—to determine the coffee's flavor profile. This quality assessment helps define the coffee's brightness and vibrancy, which are essential characteristics of high-quality specialty coffee.

COFFEE GRADINGCuppingSpecialty coffee
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What is the 'husk' in coffee grading?

In coffee grading, the 'husk' refers to a processing byproduct consisting of the dried skin, pulp, and parchment that remains after the coffee fruit is processed. It is classified as a defect during bean preparation and defect assessment because its presence indicates incomplete milling, which can negatively impact the flavor profile and consistency of the final roasted product.

COFFEE GRADINGSpecialty coffee
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How to grade by roast color?

Grading by roast color involves using visual assessment or standardized color meters to measure the roast degree against a reference scale, such as the Agtron scale. This quality control step ensures consistency across batches, as the color of the roasted bean is a primary indicator of the chemical development and flavor potential achieved during the roasting process.

COFFEE GRADINGLight roastMedium roast
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What are 'immature' beans in coffee grading?

Immature beans are underdeveloped coffee seeds that were harvested before reaching full maturity. In grading, they are considered a defect because they lack the necessary sugars and density to roast properly. These beans often result in grassy, astringent, or sour flavor issues, significantly lowering the overall quality score of a coffee lot.

COFFEE GRADINGSpecialty coffeeBitterness
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Why does 'grade' not always mean taste?

Coffee grading primarily measures physical attributes like bean size, density, and defect counts, which do not always correlate perfectly with sensory experience. While high-grade coffee is more likely to be free of defects, flavor is subjective and influenced by factors like terroir, processing, and roast profile, meaning a lower-grade bean can sometimes offer a more compelling or unique taste.

COFFEE GRADINGSpecialty coffeeTerroir
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How to conduct a physical quality report?

Conducting a physical quality report involves inspecting a 350-gram sample of green coffee for defects, measuring moisture content, and assessing bean size and color. This documentation is essential for roastery operations, as it provides a standardized record of the bean's condition, helping roasters predict roast behavior and ensure consistency across their inventory.

COFFEE GRADINGSpecialty coffee
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How do you identify insect damage in coffee beans?

Insect damage in coffee beans is identified during physical inspection by looking for small, circular holes or tunnels bored into the bean surface. These defects are categorized as either 'slight' or 'severe' depending on the number of holes, and they are a critical part of defect assessment because they often introduce off-flavors and indicate poor storage or farm-level pest control.

COFFEE GRADINGSpecialty coffeeFreshness & storage
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What is the meaning of 'EP' and 'AP' in coffee grading?

'EP' stands for European Preparation, and 'AP' stands for American Preparation. These are grading standards used to describe the level of bean sorting. EP requires a more rigorous removal of defects and smaller beans, typically allowing fewer than 8 defects per 300g, while AP is a less stringent standard that allows for a higher number of defects and a wider range of bean sizes.

COFFEE GRADINGSpecialty coffeeTypica
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What is a 'density analyzer' used for in coffee grading?

A density analyzer is a tool used in coffee grading to measure the mass of green coffee beans per unit of volume. This measurement is crucial for quality control because bean density is a strong indicator of altitude and maturity; denser beans generally offer more complex flavor profiles and require specific roasting adjustments to achieve optimal development.

COFFEE GRADINGSpecialty coffeeAltitude
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How do baristas use grading knowledge?

Baristas use grading knowledge to select high-quality beans, optimize brewing parameters, and educate customers. Understanding factors like bean density, processing method, and defect counts allows baristas to adjust grind size, water temperature, and extraction time to highlight the unique flavor profile of each coffee, ensuring a superior espresso or filter coffee experience.

COFFEE GRADINGSpecialty coffeeEspresso
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What is a 'uniformity' score in grading?

A uniformity score in coffee grading measures the consistency of the beans within a sample, specifically regarding size, density, and roast development. High uniformity is essential for quality control, as it ensures that all beans extract at the same rate, preventing uneven flavors and resulting in a balanced, clean cup that accurately reflects the coffee's potential.

COFFEE GRADINGSpecialty coffeeCupping
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What are 'immature' beans in grading?

Immature beans, often called 'quakers,' are coffee seeds harvested before they reach full maturity. Because they lack the necessary sugar reserves to caramelize during the roasting process, they remain pale and contribute unpleasant, papery, or peanut-like flavors to the cup. Identifying these defects is essential for quality control, as they significantly impact flavor problems and overall roast consistency.

COFFEE GRADINGSpecialty coffeeBitterness
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What is a 'triage' in coffee grading?

Triage is the initial sorting process used at the farm or mill level to separate high-quality coffee beans from defective ones. This essential quality control step involves removing foreign matter, broken beans, and damaged cherries to ensure only the best selection proceeds to export. It is the first line of defense in maintaining consistent bean selection and overall product quality.

COFFEE GRADINGSpecialty coffee
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What is 'AP' grade?

AP, or American Preparation, is a grading standard that specifies a maximum number of defects allowed in a 300-gram sample of green coffee. It is a common benchmark used in international trade to ensure a consistent level of quality, requiring that the coffee be carefully sorted to remove stones, broken beans, and other impurities before export.

COFFEE GRADINGSpecialty coffee
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How to grade coffee by roast color?

Grading coffee by roast color involves using a colorimeter or standardized Agtron tiles to measure the degree of roast and ensure consistency. By comparing the ground coffee's color to these benchmarks, roasters can maintain quality control, ensuring that every batch meets the desired flavor profile and roast degree, whether it is a light, medium, or dark roast.

COFFEE GRADINGLight roastMedium roast
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How do importers verify the grade of green coffee?

Importers verify the grade of green coffee through rigorous quality assurance, including physical inspection and sensory analysis. They typically request pre-shipment samples to check for defects, moisture content, and screen size, followed by cupping to ensure the flavor profile matches the contract. This due diligence is essential for maintaining trade practices and ensuring the coffee meets the buyer's expectations.

COFFEE GRADINGSpecialty coffeeTypica
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How does coffee grading differ across countries?

Coffee grading differs across countries because each origin has developed its own unique standards based on local growing conditions, processing methods, and historical trade practices. While some countries prioritize bean size, others focus on altitude, defect counts, or sensory cup scores. These regional variations reflect the diverse ways different nations define and value quality in their coffee production.

COFFEE GRADINGSpecialty coffeeTerroir
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Why is 'specialty grade' the industry standard?

Specialty grade is the industry standard because it represents a benchmark of high-quality coffee that is free from primary defects and possesses a distinct, superior flavor profile. This classification aligns with growing consumer demand for transparency, quality, and ethical sourcing, providing a clear, objective target for producers, roasters, and retailers to aim for in the competitive global market.

COFFEE GRADINGSpecialty coffee
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What is the difference between hard bean and strictly hard bean?

The difference between Hard Bean (HB) and Strictly Hard Bean (SHB) is the altitude at which the coffee is grown. SHB is grown at higher elevations, where cooler temperatures cause the beans to develop more slowly and become denser. This increased density is generally associated with a more complex, higher-quality flavor profile compared to the lower-density HB coffee.

COFFEE GRADINGSpecialty coffeeTerroir
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What is an 'EP' grade?

EP, or European Preparation, is a grading standard that requires a more rigorous sorting process than standard commercial coffee. It specifies that the green coffee must be hand-picked or machine-sorted to remove a higher number of defects, ensuring a cleaner, more consistent product that is highly valued in the specialty coffee market for its superior quality.

COFFEE GRADINGSpecialty coffee
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Does the color of green coffee beans indicate quality?

Yes, the color of green coffee beans is a key indicator of quality and freshness. High-quality beans typically have a uniform, vibrant color, while dull, faded, or discolored beans often suggest that the coffee is old, has been stored improperly, or has suffered from processing defects. A consistent, healthy color is a hallmark of well-handled, fresh green coffee.

COFFEE GRADINGSpecialty coffeeTypica
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How to interpret a coffee screen size chart?

A coffee screen size chart indicates the physical dimensions of green beans, measured in 1/64th-inch increments. By passing beans through metal grading tools, producers achieve bean sizing uniformity, which is essential for quality control. Higher screen numbers represent larger holes, meaning larger beans are retained, helping roasters predict heat absorption and ensure consistent sorting information for their specific roast profiles.

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What is a 'monsooned' coffee grade?

Monsooned coffee is a unique specialty processing method primarily from India, where beans are exposed to moisture-laden monsoon winds for several weeks. This classification results in a unique flavor profile characterized by low acidity, heavy body, and earthy, mellow notes. It is an origin-specific technique that transforms the physical and sensory characteristics of the green coffee.

COFFEE GRADINGAcidityBody
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Are there defects that don't affect taste?

Yes, some physical defects have minimal impact on taste, though they may still lower a coffee's grade. Grading logic often penalizes visual imperfections like minor insect damage or slight discoloration that do not necessarily translate to off-flavors in the cup. However, in high-end specialty coffee, sensory perception is paramount, and even 'harmless' defects are often removed to ensure aesthetic consistency.

COFFEE GRADINGSpecialty coffee
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How does drying method influence coffee grade?

Drying method significantly influences coffee grade by affecting moisture stability and flavor development. Sun-dried (natural) coffees often exhibit more body and fruitiness but are harder to grade for uniformity, while machine-dried coffees offer better consistency and control. The processing method dictates the final quality impact, as improper drying can lead to defects that lower the overall grade.

COFFEE GRADINGBody
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How does coffee variety impact its grade?

Coffee variety is a primary determinant of quality potential, as different cultivars like Arabica and Robusta possess distinct genetic traits. Arabica varieties are generally graded higher due to their complex acidity and flavor profiles, while Robusta is often relegated to commercial grades. Within Arabica, specific varietals are prized for their unique sensory characteristics, which directly influence their market value and grading.

COFFEE GRADINGArabicaRobusta
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What is a 'uniformity' score in coffee grading?

A uniformity score in coffee grading measures the consistency of flavor across multiple cups of the same coffee lot. During a cupping assessment, graders evaluate several samples to ensure that each cup tastes the same. High uniformity indicates a well-processed, consistent batch, while low uniformity suggests that the lot may contain defective beans or inconsistent roast quality.

COFFEE GRADINGCupping
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How to identify fermentation defects in coffee beans?

Fermentation defects are identified through sensory analysis, where beans exhibit off-flavors like vinegar, sourness, or medicinal notes. These processing flaws occur when fermentation is uncontrolled or prolonged, leading to bacterial growth. In green coffee, these defects may appear as discolored or 'foxy' beans, which are then confirmed during cupping as a 'sour' or 'fermented' cup fault.

COFFEE GRADINGFermentationCupping
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How are samples prepared for grading?

Samples are prepared for grading through a standardized cupping protocol, which ensures consistency across the industry. A representative sample of green coffee is roasted to a specific color, ground to a precise particle size, and infused with hot water. This standardized process allows graders to evaluate the coffee's quality, aroma, and flavor without the interference of brewing variables.

COFFEE GRADINGWaterCupping
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What is 'screen sorting'?

Screen sorting is a mechanical grading process where green coffee beans are passed through a series of metal screens with holes of standardized diameters. This method separates beans by size, which is a key indicator of quality and density. By ensuring uniform bean sizing, producers can achieve more consistent roasting results and remove smaller, lower-quality beans from the final lot.

COFFEE GRADINGRoasting
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What is 'physical grading' vs 'sensory grading'?

Physical grading evaluates the tangible characteristics of green coffee, such as bean size, moisture content, and defect count, using mechanical tools. Sensory grading, or cupping, evaluates the coffee's flavor, aroma, and acidity through a standardized tasting protocol. Both methods are essential for a complete quality assessment, ensuring the coffee is both physically sound and delicious.

COFFEE GRADINGAcidityCupping
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What is a "scant" cup?

A 'scant' cup is a term used in coffee cupping to describe a measurement that is slightly less than the standard or expected volume. In professional grading, it refers to a dose or water volume that falls just short of the full requirement, which can subtly alter the extraction and perceived intensity of the coffee during evaluation.

COFFEE GRADINGCuppingGrinding
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Why are some beans "peaberries"?

Peaberries are a natural mutation where only one seed develops inside the coffee cherry instead of the usual two. This results in a smaller, rounder bean that is often sorted out during grading. Many enthusiasts prize peaberries for their unique density and flavor profile, which can be more concentrated than standard flat-sided beans.

COFFEE GRADINGSpecialty coffee
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How to identify high-quality coffee beans?

High-quality coffee beans are identified by their uniformity in size, color, and density, as well as the presence of a clear roast date and origin information. Visually, look for beans that are free of defects like broken pieces, insect damage, or 'quakers.' A high-quality bean will also have a fresh, vibrant aroma and a clear, distinct flavor profile.

COFFEE GRADINGSpecialty coffee
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How does processing method impact grading?

Processing methods significantly impact coffee grading because they alter the physical appearance and sensory profile of the beans. Washed coffees are typically graded on their cleanliness and uniformity, while natural or honey-processed coffees are evaluated for their sweetness and fruit-forward characteristics. Each method requires different grading criteria to account for the unique way the bean interacts with the fruit during drying.

COFFEE GRADINGPulped NaturalFermentation
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Can you grade coffee at home?

While you cannot perform a professional-grade assessment at home, you can certainly inspect your beans for quality. By spreading beans on a white surface, you can look for physical defects like broken, insect-damaged, or discolored beans. While you lack the professional cupping environment and calibrated equipment, this simple inspection helps you identify the quality and freshness of your coffee.

COFFEE GRADINGSpecialty coffeeFreshness & storage
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What is the difference between Grade 1 and Grade 2 coffee?

The difference between Grade 1 and Grade 2 coffee is primarily defined by the number of physical defects found in a sample. Grade 1 is the highest quality, requiring zero primary defects and very few secondary defects. Grade 2 allows for a slightly higher tolerance of minor imperfections, making it a common standard for high-quality commercial or entry-level specialty coffee.

COFFEE GRADINGSpecialty coffee
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What is specialty grade coffee?

Specialty grade coffee refers to high-quality beans that have been graded according to strict SCA standards. To earn this designation, green coffee must be free of primary defects and have a limited number of secondary defects in a 350g sample. It is typically evaluated by a Q-Grader and must achieve a cupping score of 80 points or higher on the 100-point scale.

COFFEE GRADINGSpecialty coffeeCupping
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What is the SCAA grading system?

The SCAA (now the Specialty Coffee Association, or SCA) grading system is a standardized set of criteria used to evaluate the quality of green coffee. It combines physical grading, which counts defects per a set weight, with sensory evaluation, or cupping, to determine if a bean meets the strict standards required to be classified as specialty coffee.

COFFEE GRADINGSpecialty coffeeCupping
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How do screen sizes affect coffee grading?

Screen size refers to the physical diameter of a coffee bean, measured using standardized perforated plates. During classification, beans are sorted by size to ensure consistency in roasting. Because larger beans are generally perceived to be more uniform and higher quality, specific screen sizes are often used to define grades, such as Screen 18, which is a common premium designation.

COFFEE GRADINGSpecialty coffeeRoasting
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Why does bean density matter in grading?

Bean density matters in coffee grading because it correlates with factors like water content, growing altitude, and varietal, all of which influence flavor potential. Denser beans, often grown at higher altitudes, tend to absorb water more slowly and evenly during brewing, leading to a more complex and nuanced flavor profile.

COFFEE GRADINGWaterAltitude
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What is a "washed" coffee grade?

A "washed" coffee grade refers to the processing method where the fruit pulp is removed from the coffee cherry before the beans are dried. This technique, also known as wet processing, emphasizes the bean's intrinsic quality and terroir. By stripping away the fruit early, washed coffee typically yields a cleaner, brighter cup with higher acidity and a lighter, more tea-like body.

COFFEE GRADINGSpecialty coffeeFermentation
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What is cupping?

Coffee cupping is a standardized sensory evaluation method used by professionals to assess coffee quality. By following strict protocols for roasting, grinding, and brewing, tasters can objectively score coffee based on attributes like aroma, acidity, body, and flavor. This universal language allows the industry to grade coffee consistently and identify specialty-grade beans that score 80 points or higher.

COFFEE GRADINGSpecialty coffeeCupping
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What is "New York" vs "European" preparation?

"New York" and "European" preparation refer to distinct standards for grading green coffee beans, primarily differing in their tolerance for defects. European Preparation (EP) is generally stricter, allowing fewer defects per 300 grams than the "New York" standard, which is more aligned with typical US import standards.

COFFEE GRADINGTypica
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Is grading consistent across different countries?

Coffee grading consistency varies significantly across countries, as many origins have their own specific grading systems, often influenced by historical practices and local regulations. While international bodies like the Specialty Coffee Association (SCA) provide standardized protocols, their adoption and interpretation can differ globally.

COFFEE GRADINGSpecialty coffee
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How is coffee graded?

Coffee is graded based on a combination of physical attributes and sensory evaluation. Physical grading often involves size, density, and the absence of defects, while sensory grading, particularly for specialty coffee, uses the Specialty Coffee Association's 100-point scale to assess aroma, flavor, acidity, body, and aftertaste. This process ensures quality standards are met.

COFFEE GRADINGSpecialty coffeeAcidity
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What are coffee defects?

Coffee defects are physical or sensory imperfections in green coffee beans that negatively impact the quality, flavor, and consistency of the final cup. These defects, which can range from insect damage and mold to broken or discolored beans, are identified during the sorting and grading process to ensure that only high-quality beans reach the roaster.

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What is a Q-Grader?

A Q-Grader is a certified coffee professional who has passed a rigorous examination to evaluate coffee quality using standardized cupping protocols. They serve as the industry's ultimate arbiters of sensory quality, providing objective scores that help determine the value of specialty coffee and ensure consistent standards for farmers, traders, and roasters across the globe.

COFFEE GRADINGSpecialty coffeeCupping
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Does size matter in coffee grading?

Yes, bean size is a critical factor in coffee grading because it often correlates with density, moisture content, and flavor quality. While not the only indicator of a great cup, larger, more uniform beans usually roast more evenly. Grading screens are used to sort these beans, ensuring that a batch is consistent and meets specific market standards.

COFFEE GRADINGSpecialty coffee
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How does moisture content affect coffee grading?

Moisture content is a vital metric in coffee grading because it determines a bean's stability and longevity. Ideally, coffee should have a moisture content between 10% and 12%. If it is too low, the beans become brittle and lose flavor; if it is too high, the coffee is susceptible to mold, degradation, and rapid staling during transit and storage.

COFFEE GRADINGSpecialty coffeeFreshness & storage
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Are "null" beans counted in grading?

Yes, "null" or defective beans are central to coffee grading. Graders perform defect counting by inspecting a 300-gram sample, categorizing flaws as primary or secondary. Primary defects, like full black beans, immediately disqualify coffee from specialty status, while secondary defects are aggregated to determine if a lot meets specific quality standards during coffee processing.

COFFEE GRADINGSpecialty coffee
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How do you pass the Q-Grader exam?

Passing the Q-Grader exam requires completing rigorous coffee training and successfully navigating 20 distinct sensory and knowledge-based tests over six days. Candidates must demonstrate mastery in coffee cupping, olfactory skills, triangulation, and defect identification. This certification is the global benchmark for sensory expertise, requiring a deep understanding of the SCA 100-point scale to evaluate coffee quality accurately.

COFFEE GRADINGSpecialty coffeeCupping
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What is a "full natural" grade?

A "full natural" grade refers to coffee processed using the natural method, where the entire coffee cherry is dried with the seed inside. This processing technique, often associated with high-quality specialty coffee, requires careful sorting to ensure the grade reflects the absence of defects like over-fermented or damaged beans, which are more common in this labor-intensive method.

COFFEE GRADINGSpecialty coffeeFermentation
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How to describe coffee quality using grading terms?

To describe coffee quality using grading terms, focus on objective metrics like screen size, defect count, and cupping scores. Use professional vocabulary such as "clean cup," "uniformity," and "density" to communicate the physical and sensory attributes of the coffee. These terms provide a shared language that helps distinguish specialty coffee from commercial-grade alternatives based on measurable quality standards.

COFFEE GRADINGSpecialty coffeeCupping
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How does screen sizing equipment work?

Screen sizing equipment works by passing green coffee beans through a series of vibrating metal plates with precisely calibrated holes. Beans smaller than the holes fall through, while larger beans are retained on the surface. This mechanical process sorts coffee by physical size, ensuring uniformity, which is critical for consistent roasting and achieving a high-quality grade.

COFFEE GRADINGSpecialty coffeeRoasting
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How to read a coffee grading report?

To read a coffee grading report, look for three key sections: physical defect counts, screen size, and the cupping score. The report will detail the number of primary and secondary defects found in a 300-gram sample, the bean size distribution, and the sensory evaluation. These data points collectively determine if the coffee meets specialty standards and predict its performance during roasting.

COFFEE GRADINGSpecialty coffeeCupping
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What is "screen 18"?

Screen 18 refers to a coffee bean size classification where the beans are 18/64ths of an inch in diameter. This is a common standard for high-quality, large-bean coffee. Grading screens are used during processing to sort beans by size, ensuring that a lot is uniform, which promotes even roasting and consistent flavor development in the final cup.

COFFEE GRADINGSpecialty coffeeRoasting
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What are the common grading terms in Ethiopia?

Ethiopian coffee grading is unique, often combining physical defect counts with sensory cup quality. Grades range from 1 to 9, with Grades 1 and 2 being the only ones considered specialty. These grades are determined by the number of defects per 300g sample and the coffee's overall cup profile, reflecting the country's diverse and highly prized heirloom varieties.

COFFEE GRADINGSpecialty coffeeCupping
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What are the visual signs of bad coffee?

Visual signs of bad coffee include black, sour, or insect-damaged beans, as well as broken fragments or foreign matter like stones and twigs. These defects are easily spotted during a physical inspection of green coffee. In roasted coffee, look for 'quakers'—underdeveloped, pale beans that fail to brown properly—which indicate poor quality and will taste thin or grassy.

COFFEE GRADINGSpecialty coffeeCupping
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How important is uniformity in coffee grading?

Uniformity is crucial in coffee grading because it ensures consistent roasting and extraction. Beans of similar size and density absorb heat at the same rate, preventing uneven roasting where some beans burn while others remain underdeveloped. High-quality specialty coffee is sorted by screen size and density to achieve this uniformity, which is essential for a balanced, predictable cup.

COFFEE GRADINGSpecialty coffeeCupping
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What is the "cup score"?

The cup score is a numerical value assigned to coffee based on the Specialty Coffee Association (SCA) standards, representing its overall quality. On a 100-point scale, coffee scoring 80 or above is classified as specialty grade. This score is determined by certified Q Graders who evaluate attributes like flavor, acidity, body, and balance during a professional cupping session.

COFFEE GRADINGSpecialty coffeeCupping
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How does humidity affect coffee during grading?

Humidity significantly affects coffee grading by altering the moisture content of the beans, which is critical for stability and shelf life. If coffee is too humid during storage or grading, it becomes susceptible to mold and rapid aging. Graders use moisture meters to ensure beans fall within the ideal range, typically 10% to 12%, to maintain quality and prevent spoilage.

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Does altitude affect coffee grading?

Yes, altitude is a critical factor in coffee grading because higher elevations generally produce denser, higher-quality beans. Coffee grown at high altitudes, often labeled as Strictly High Grown (SHG) or Strictly Hard Bean (SHB), matures more slowly, resulting in more complex sugars and acids. These beans are highly sought after and typically receive higher grades in the specialty market.

COFFEE GRADINGSpecialty coffeeTerroir
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