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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 the difference between washed and natural processing in grading?

Washed and natural processing impact coffee grading by altering the bean's physical appearance and flavor profile. Washed coffee is typically more uniform and cleaner, making it easier to grade for defects. Natural-processed coffee, dried with the fruit intact, often has more variation in color and size, requiring different grading criteria to account for its inherent complexity and potential for unique defects.

COFFEE GRADINGSpecialty coffeeFermentation
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Why do coffee beans have different sizes?

Coffee beans have different sizes due to genetic variety, altitude, and the maturity of the coffee cherry. Larger beans are often associated with higher quality, as they typically come from slower-maturing cherries at higher altitudes. Grading by screen size is a standard practice to ensure uniformity, which is essential for consistent roasting and flavor development.

COFFEE GRADINGSpecialty coffeeTypica
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What is a 'sour bean'?

A 'sour bean' is a primary defect in green coffee caused by over-fermentation or improper drying. These beans often have a distinct, unpleasant, and vinegary or fermented odor and taste. In grading, the presence of sour beans is a major quality issue, as even a small percentage can ruin the flavor of an entire batch of coffee.

COFFEE GRADINGSpecialty coffeeFermentation
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Are there 'specialty' decaf grades?

Yes, there are specialty-grade decaf coffees, though the grading process is more complex. Because the decaffeination process can alter the bean's physical structure and flavor, experts evaluate decaf based on the quality of the green coffee before processing and the success of the decaffeination method in preserving the coffee's original, high-quality characteristics.

COFFEE GRADINGDecafSpecialty coffee
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Can defects be tasted in coffee?

Yes, defects can absolutely be tasted in coffee, often manifesting as harsh, sour, fermented, or 'stinky' flavors. While some minor defects might be masked by dark roasting, significant primary defects like moldy or black beans can ruin an entire cup, creating unpleasant sensations that detract from the coffee's natural, desirable characteristics.

COFFEE GRADINGBitternessAstringency
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What is the 'ICA' coffee grade?

The 'ICA' is not a standard coffee grade, but rather an acronym often confused with the International Coffee Agreement (ICA) or the International Coffee Organization (ICO). These entities establish international trade frameworks and statistical standards for the industry, but they do not issue specific quality grades for individual coffee beans or lots.

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Does variety influence coffee grade?

Yes, variety significantly influences coffee grade and quality. Certain varieties, such as Geisha or Bourbon, are genetically predisposed to produce more complex, sweet, and aromatic flavors, which often leads to higher cupping scores. While grading systems focus on physical defects, the inherent quality of the variety is a primary driver of the coffee's final market value.

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What is a cupping score?

A cupping score is a numerical value, typically on a 100-point scale, used to evaluate the quality of coffee. Developed by the Specialty Coffee Association, it assesses attributes like aroma, flavor, acidity, body, and balance. Coffees scoring 80 points or higher are generally classified as 'specialty,' representing the highest quality in the industry.

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Is size really related to quality?

While bean size is a common grading metric, it is not a direct indicator of flavor quality. Larger beans, often labeled as 'Supremo' or 'AA,' are prized for their uniformity and potential for even roasting, but smaller beans can be just as delicious. Size is primarily a tool for consistency and trade classification rather than a guarantee of taste.

COFFEE GRADINGSpecialty coffeeArabica
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How to evaluate green coffee quality?

Evaluating green coffee quality requires a systematic approach combining physical inspection and sensory analysis. Graders check for moisture content, screen size, and density, while meticulously counting primary and secondary defects. Finally, the coffee is roasted and cupped to assess its flavor profile, acidity, and body, ensuring it meets the standards required for specialty-grade classification.

COFFEE GRADINGSpecialty coffeeGrinding
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What is the 'Parchment' stage of grading?

The parchment stage refers to the protective, papery endocarp layer surrounding the coffee seed during processing. In green coffee grading, the presence of parchment is considered a secondary defect because it indicates incomplete milling. Removing this layer is essential to ensure consistent roasting and to prevent off-flavors that can negatively impact the quality of the final cup.

COFFEE GRADINGRoasting
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What is 'Broken Bean' percentage?

Broken bean percentage is a metric used in coffee grading to quantify the physical damage within a sample of green coffee. These defects, often caused by mechanical hulling or improper processing, are counted during inspection. High percentages of broken beans lead to uneven roasting and inconsistent flavor, making them a key indicator of overall quality and processing care.

COFFEE GRADINGSpecialty coffeeRoasting
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Are there different grading systems for different countries?

Yes, coffee grading systems vary significantly by country, as each region often develops its own standards based on local processing methods, bean size, and altitude. While some countries follow international guidelines like the Specialty Coffee Association (SCA) protocols, others, such as Colombia and Ethiopia, utilize unique, country-specific grading systems that prioritize different physical and sensory characteristics.

COFFEE GRADINGSpecialty coffeeEthiopia
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How is color used in coffee grading?

In green coffee grading, bean color is a vital indicator of freshness, moisture content, and processing quality. Uniform, vibrant green or bluish-green colors typically signal high-quality, fresh-crop beans. Conversely, pale, yellow, or brown-tinged beans often suggest the coffee is aged, improperly dried, or has suffered from environmental stress, all of which negatively impact the final roast and flavor.

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Is graded coffee always better?

Graded coffee is not always 'better' in terms of personal preference, but it is more consistent and predictable. Grading measures physical quality and defect counts, which helps ensure a clean, defect-free cup. However, a lower-grade coffee might still offer a flavor profile you enjoy, while a high-grade coffee might be too bright or complex for your specific taste.

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What is the 'NY Prep' standard?

The 'NY Prep' (New York Preparation) standard is a historical and commercial grading term used in the coffee trade to describe a specific level of quality for green coffee. It generally refers to a coffee that has been cleaned and sorted to a standard acceptable for trading on the New York Coffee Exchange, ensuring a baseline of consistency for large-scale commercial buyers.

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Does organic status affect coffee grading?

Organic status does not directly affect the physical grading of coffee beans. Grading is based on physical attributes like size, moisture, and defect counts, while organic certification is a process-based verification of farming practices. A coffee can be organic but have a low grade, or be non-organic and have a very high grade.

COFFEE GRADINGSpecialty coffeeOrganic
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What is 'screen size' and why does it matter?

Screen size refers to the physical size of a coffee bean, measured by passing it through a series of perforated metal plates. It matters because bean size is a key indicator of quality and consistency; beans of similar size roast more evenly, leading to a more balanced and predictable flavor profile in the final cup.

COFFEE GRADINGSpecialty coffee
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Why is bean consistency important for grading?

Bean consistency is the cornerstone of coffee grading because it directly impacts the roasting process and the final flavor. Uniform beans—in size, density, and moisture—roast evenly, preventing the bitter or sour notes caused by uneven development. Consistency is the primary indicator of a well-managed supply chain and is essential for achieving a high-quality, predictable cup.

COFFEE GRADINGSpecialty coffeeBitterness
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How to tell the grade of coffee by looking?

You can estimate the grade of coffee by visually inspecting the beans for uniformity in size, color, and shape, and by checking for physical defects. High-grade coffee beans are typically consistent in appearance, free of broken pieces, stones, or discolored beans. While visual inspection is not a substitute for professional cupping, it is a reliable indicator of processing quality.

COFFEE GRADINGSpecialty coffeeTypica
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What is a 'quaker' in coffee?

A 'quaker' is an underdeveloped coffee bean that remains pale after roasting because it lacks the sugars necessary for proper caramelization. These beans are typically the result of harvesting unripe cherries or malnutrition in the coffee plant. Because they fail to brown, they stand out visually in a batch and often impart unpleasant, papery, or peanut-like flavors to the final cup.

COFFEE GRADINGSpecialty coffeeFermentation
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How does moisture content affect coffee quality?

Moisture content is a critical quality control metric for green coffee, with an ideal range of 10% to 12%. If moisture drops below 10%, beans become brittle and lose flavor; if it exceeds 12%, the coffee is prone to mold, fermentation, and rapid degradation. Proper moisture levels are essential for maintaining freshness and ensuring a stable, high-quality roast.

COFFEE GRADINGWaterSpecialty coffee
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How is green coffee graded?

Green coffee is graded by assessing physical attributes and quality markers in a standardized 350g sample. The process involves sorting beans by size using screens, identifying and counting coffee defects, and evaluating moisture content. These SCA protocols provide a universal language for the industry to determine bean quality, ensuring that specialty-grade coffee meets strict standards for uniformity and flavor potential.

COFFEE GRADINGSpecialty coffee
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What does Strictly Hard Bean (SHB) mean in coffee?

Strictly Hard Bean (SHB) is a classification term indicating that coffee was grown at a high altitude, typically above 1,200 to 1,500 meters. Higher elevations result in cooler temperatures, which slow the maturation of the coffee cherry. This slower growth produces a denser bean, which is highly prized for its complex flavor profile and superior quality.

COFFEE GRADINGSpecialty coffeeTerroir
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What is the difference between Kenya AA and AB coffee grades?

The difference between Kenya AA and AB coffee grades is primarily bean size. AA beans are the largest, passing through a screen size of 18 (approx. 7.2mm), while AB beans are slightly smaller, passing through a screen size of 15 or 16 (approx. 6.0-6.4mm). Both grades are high quality, but AA is often priced higher due to its larger, more uniform size.

COFFEE GRADINGSpecialty coffeeKenya
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What are the specifications for specialty coffee grading?

Specialty coffee grading is defined by the SCA as having zero primary defects and no more than five secondary defects in a 350g sample. Additionally, the coffee must be free of 'quakers' (unripe beans) and have a moisture content between 10% and 12%. These rigorous standards ensure that only the highest quality beans reach the specialty market.

COFFEE GRADINGSpecialty coffeeCupping
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What are primary vs secondary coffee defects?

Primary coffee defects are severe physical flaws, such as black or sour beans and foreign matter, that disqualify a lot from specialty status under SCA grading standards. Secondary defects are less severe, such as broken or insect-damaged beans; these are tolerated in small quantities, with multiple secondary defects equaling one full defect in a 350-gram green coffee sample.

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Does bean density impact the final cup quality?

Yes, coffee density significantly impacts final cup quality by dictating how beans absorb and release heat during roasting. Denser beans, typically grown at higher altitudes, mature more slowly, allowing for more complex flavor development. While density is not a standalone guarantee of quality, it is a critical metric for roasters to adjust their roasting variables for optimal extraction and flavor.

COFFEE GRADINGSpecialty coffeeTerroir
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How do primary and secondary defects affect coffee grade?

Primary and secondary defects are physical imperfections in green coffee that directly lower bean quality and cup score. The SCAA system categorizes these flaws to standardize coffee sorting; primary defects are severe and disqualify a lot from specialty status, while secondary defects are less impactful but still count toward the total defect threshold allowed in a sample.

COFFEE GRADINGSpecialty coffeeCupping
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What does moisture content mean in green coffee grading?

Moisture content in green coffee refers to the percentage of water remaining in the bean after drying, typically measured between 10% and 12%. This level is critical for bean stability; if it is too high, the coffee can develop mold or rot, and if it is too low, the coffee can lose its flavor and go stale prematurely.

COFFEE GRADINGWaterTypica
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Why is screen size important for coffee beans?

Screen size is critical for coffee beans because it ensures bean uniformity, which is essential for roasting consistency. When beans are of a similar size, they absorb heat at the same rate, preventing uneven roasting where some beans become over-roasted while others remain under-roasted. This physical grading step is a fundamental part of professional coffee grading.

COFFEE GRADINGSpecialty coffeeRoasting
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What does screen size mean in coffee grading?

Coffee screen size is a physical grading standard used to measure the dimensions of green coffee beans. Beans are passed through metal sieves with holes measured in 1/64th-inch increments. A uniform bean size is essential for coffee quality, as it ensures that all beans in a batch roast evenly, preventing underdeveloped or burnt flavors during the roasting process.

COFFEE GRADINGSpecialty coffeeRoasting
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How does coffee processing affect the final cup?

Coffee processing—the method used to remove fruit from the bean—is a primary driver of flavor, acidity, and body. Washed processing typically yields a clean, bright, and acidic cup, while natural processing often results in a fuller body with intense, fruit-forward sweetness. Honey processing sits between these two, offering a balanced profile with increased sweetness and moderate acidity.

COFFEE GRADINGFermentationPulped Natural
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What are the most common defects found in green coffee?

Common green coffee defects include black beans, sour beans, insect damage, mold, and quakers. These imperfections are identified through rigorous sorting and quality control processes, often using the Specialty Coffee Association (SCA) grading standards. Removing these defects is essential, as they can significantly degrade cup quality, introducing off-flavors like mustiness, bitterness, or papery notes to the final brew.

COFFEE GRADINGSpecialty coffeeBitterness
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What is the difference between specialty grade and commercial grade coffee?

Specialty coffee is defined by the Specialty Coffee Association (SCA) as coffee that scores 80 points or higher on a 100-point scale during professional cupping. In contrast, commercial or commodity coffee is typically traded as a uniform, bulk product on global exchanges, focusing on volume and low cost rather than intrinsic flavor quality or specific provenance.

COFFEE GRADINGSpecialty coffeeCupping
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How does moisture content affect coffee grading?

Moisture content is a critical grading metric that ensures green coffee stability and quality. The industry standard for specialty coffee is 10–12%. If moisture is too high, beans are prone to mold and inconsistent roasting; if too low, the coffee may be brittle, over-dried, and suffer from faded, lackluster flavor profiles.

COFFEE GRADINGSpecialty coffeeWater
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How are coffee beans sorted by density?

Coffee beans are sorted by density using gravity tables or air-classification systems that separate beans based on their mass relative to volume. Higher density beans, often grown at higher altitudes, are generally prized for their superior flavor complexity and structural integrity, as they respond more predictably to the heat transfer required during the roasting process.

COFFEE GRADINGSpecialty coffeeAltitude
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What is the purpose of a cupping form?

A cupping form is a standardized document used to record the sensory evaluation of coffee. It provides a structured framework for assessing attributes like fragrance, flavor, acidity, and body, ensuring that tasters use a consistent language and scoring system. This allows for objective comparisons between different coffees and helps maintain quality control across the industry.

COFFEE GRADINGGrindingCupping
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Why are some coffee beans called 'strictly hard bean'?

The term 'Strictly Hard Bean' (SHB) is a grading classification used to identify coffee grown at high altitudes, typically above 1,200 to 1,500 meters. At these elevations, the cooler temperatures cause the coffee cherries to mature more slowly, resulting in a denser, harder bean that is highly valued for its complex flavor and superior quality.

COFFEE GRADINGSpecialty coffeeTerroir
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What is a quaker in coffee roasting?

A quaker is a coffee bean that fails to brown properly during roasting, remaining pale or khaki in color. These beans are typically the result of underripe cherries harvested alongside mature ones. Because they lack the necessary sugars for the Maillard reaction, quakers often impart unpleasant, papery, or rancid peanut-like flavors to the final cup.

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What does 'EP' mean on a bag of coffee?

EP stands for 'European Preparation' on a bag of coffee. It is a grading standard indicating that the green coffee beans have been meticulously hand-sorted to remove defects, such as broken beans, stones, or foreign matter, ensuring a higher quality and more consistent roast.

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Why are Kenyan coffee beans graded AA?

Kenyan coffee beans are graded AA based on their physical size, specifically indicating that the beans have passed through a screen with a diameter of 7.2 millimeters. This grading system is a standard for coffee export in Kenya, where 'AA' represents the largest bean size, often associated with higher quality and more uniform roasting potential.

COFFEE GRADINGSpecialty coffeeKenya
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What does SHB mean on a coffee bag?

SHB stands for 'Strictly Hard Bean,' a classification used primarily in Central American countries to denote coffee grown at high altitudes. Because the cooler temperatures at these elevations cause the coffee cherries to mature more slowly, the resulting beans are denser and harder, which is generally associated with a more complex and desirable flavor profile.

COFFEE GRADINGAltitudeSpecialty coffee
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What is a peaberry coffee bean?

A peaberry is a natural coffee mutation where only one seed develops inside the coffee cherry instead of the usual two. This results in a small, round, and dense single bean rather than the typical flat-sided pair. Because they represent only 5–10% of a harvest, they are often separated during coffee grading and sold as a distinct, premium product.

COFFEE GRADINGSpecialty coffeeTypica
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What is the difference between specialty and commodity coffee?

Specialty coffee is defined as coffee that scores 80 points or higher on the Specialty Coffee Association’s 100-point grading scale, with minimal to no defects. In contrast, commodity coffee scores below 80 points and is typically traded in bulk based on volume and price rather than specific flavor profiles, traceability, or rigorous quality control standards.

COFFEE GRADINGSpecialty coffeeCupping
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How does the SCA cupping score work?

The SCA cupping score is a 100-point scale used for professional coffee evaluation. Coffees scoring 80 points or higher are classified as specialty coffee, while those below are considered commercial grade. The process involves a standardized protocol where trained Q-graders assess attributes like aroma, flavor, acidity, and body to ensure consistency and quality across the global supply chain.

COFFEE GRADINGCuppingSpecialty coffee
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What do coffee bean grades like AA and AB mean?

Coffee bean grades like AA and AB refer to the physical size of the beans, a classification system most commonly used in Kenya. 'AA' beans are the largest, typically passing through a screen size of 17/18, while 'AB' beans are slightly smaller. While size is a traditional indicator of quality, it does not always guarantee superior flavor.

COFFEE GRADINGKenyaTypica
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How does the SCA coffee grading system work?

The SCA coffee grading system evaluates green coffee through a two-part process: physical inspection and sensory analysis. Graders check for defects like quakers or insect damage, then perform a cupping session to score the coffee on attributes like aroma, acidity, body, and balance. A score of 80 or higher is required to achieve the specialty grade designation.

COFFEE GRADINGAcidityBody
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What is the difference between SHB and SHG coffee?

SHB (Strictly Hard Bean) and SHG (Strictly High Grown) are classifications used to denote coffee grown at high altitudes. While the acronyms differ, both terms generally imply that the coffee was cultivated at elevations above 1,200–1,500 meters. Higher altitudes result in slower maturation, leading to denser, more flavorful beans with higher acidity and complexity.

COFFEE GRADINGAltitudeAcidity
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What are the primary defects in green coffee grading?

Primary defects in green coffee grading are severe flaws that significantly impact the cup quality, such as full black beans, sour beans, fungus, or foreign matter like stones and sticks. These defects are strictly limited in specialty-grade coffee because they introduce harsh, medicinal, or fermented flavors that can ruin an entire batch during the roasting process.

COFFEE GRADINGFermentationSpecialty coffee
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What is the difference between microlot and estate coffee grading?

A microlot refers to a specific, small-batch harvest from a distinct area of a farm known for unique quality, while estate coffee signifies beans produced entirely on one specific farm. Microlots prioritize exceptional, traceable quality over volume, whereas estate coffee provides consistency and farm-level traceability. Both represent higher standards of coffee grading and market transparency.

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Why are some specialty coffees graded as "AA"?

The "AA" grade in specialty coffee—most commonly associated with Kenya—refers to the physical bean size. Specifically, AA beans are those that pass through an 18-screen (7.2mm) but are retained by a 17-screen (6.8mm). While this sizing reflects a premium coffee, it measures size rather than flavor, though larger beans are often perceived to have more concentrated aromatic oils.

COFFEE GRADINGKenyaWashed
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How are coffee beans classified by density?

Coffee beans are classified by density based on their hardness, which correlates strongly with altitude. High-altitude coffee grows more slowly in cooler temperatures, resulting in harder, denser beans with higher sugar concentration. Density is assessed using visual inspection or specific weight-to-volume measurements, with denser beans typically yielding more complex, acidic flavors and requiring more heat to roast evenly.

COFFEE GRADINGAltitudeTypica
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What is the visual inspection process for green coffee?

The visual inspection process for green coffee involves carefully examining a 300g-350g sample of raw, unroasted beans to identify and count physical defects. Graders look for issues like black beans, sour beans, insect damage, or foreign material. This standardized quality control step ensures the coffee meets specific specialty grade requirements by minimizing off-flavors caused by damaged beans.

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What is screen size in coffee grading?

Screen size refers to the physical measurement of coffee beans, determined by passing them through a series of standardized, perforated metal plates. The size is measured in 1/64th of an inch increments, with the number (e.g., screen 18) indicating the hole diameter. This is a crucial physical grading metric used to ensure bean uniformity, which promotes consistent roasting and premium market pricing.

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What is the difference between Grade 1 and Grade 2 specialty coffee?

The difference between Grade 1 and Grade 2 specialty coffee lies in the allowable defect count within a 350-gram sample. Grade 1 is the highest standard, typically allowing zero primary defects and very few secondary defects. Grade 2 allows for a slightly higher tolerance of minor imperfections, making it a high-quality but slightly less stringent classification than Grade 1.

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How do insect-damaged beans affect coffee grade?

Insect-damaged beans are considered a secondary defect in coffee grading. They occur when pests, such as the coffee berry borer, penetrate the bean, leaving holes or tunnels. These beans can introduce unpleasant, earthy, or fermented flavors into the cup, and a high count of them will lower the overall grade of a coffee batch.

COFFEE GRADINGFermentation
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What are primary and secondary coffee defects?

Primary coffee defects are severe flaws that significantly impact cup quality, such as full black or sour beans, and are strictly limited in specialty coffee. Secondary defects are less severe, such as broken or insect-damaged beans, and have a higher tolerance threshold. Grading systems use these counts to determine the overall quality and market value of a green coffee batch.

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What is "New Crop" coffee?

New crop coffee refers to beans that have been harvested and processed within the most recent harvest cycle, typically arriving at roasteries within a few months of being picked. Because these beans are fresh, they often exhibit higher moisture content, brighter acidity, and more vibrant, distinct flavor profiles compared to 'past crop' or aged coffee.

COFFEE GRADINGTypicaAcidity
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What are "quakers" in coffee grading?

Quakers are defective, underdeveloped coffee beans that fail to roast properly, remaining light-colored and dense even after the rest of the batch has darkened. They are caused by harvesting unripe cherries or poor plant nutrition. Because they lack the sugars needed for proper caramelization, quakers taste like peanut, grass, or straw and significantly degrade the cup quality.

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Are there international standards for coffee grading?

There is no single, universally mandated international standard for coffee grading. While organizations like the International Coffee Organization (ICO) provide guidelines and the Specialty Coffee Association (SCA) offers a widely adopted Q-grading system for specialty coffee, most grading remains based on national standards that vary by producing country, focusing on criteria like bean size, defect counts, and moisture content.

COFFEE GRADINGSpecialty coffee
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What does the term "Strictly Hard Bean" mean?

Strictly Hard Bean (SHB) is a classification used primarily in Central and South America to denote coffee grown at high altitudes, typically above 1,200 to 1,500 meters. The cooler temperatures at these elevations cause the coffee cherries to mature more slowly, resulting in a denser, harder bean that is highly prized for its complex flavor profile and acidity.

COFFEE GRADINGAltitudeAcidity
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What does "screen 17/18" mean in coffee?

Screen 17/18 refers to the physical size of green coffee beans, measured in 1/64th of an inch. A 'screen 17/18' classification means the beans are large, specifically between 17 and 18/64ths of an inch in diameter. This is a traditional grading standard used to ensure uniformity in a batch, which helps roasters achieve a more consistent roast profile.

COFFEE GRADINGRoasting
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Why is bean size sometimes irrelevant to quality?

Bean size is often a poor indicator of quality because it is primarily a physical characteristic influenced by variety, altitude, and processing, rather than flavor potential. While large beans are traditionally easier to roast evenly, smaller beans from high-altitude, slow-maturing varieties often possess superior density, complexity, and acidity, proving that size does not equate to a better cup.

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What is the "cup score" range for specialty coffee?

The cup score range for specialty coffee is generally 80 points or higher on a 100-point scale, as defined by the Specialty Coffee Association (SCA). Coffees scoring between 80 and 84.99 are considered 'Very Good,' 85 to 89.99 are 'Excellent,' and 90 to 100 are 'Outstanding,' representing the highest tier of quality in the global market.

COFFEE GRADINGCuppingSpecialty coffee
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COFFEE GRADINGAnswer

Why do graders use a spittoon during cupping?

Graders use a spittoon during cupping to avoid caffeine overload and prevent palate fatigue. By spitting out the coffee after slurping it across the tongue, professionals can maintain their sensory sharpness while evaluating dozens of samples in a single session. This practice is essential for consistent sensory evaluation and accurate quality assessment throughout the coffee grading process.

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COFFEE GRADINGAnswer

How does storage affect the grading of green coffee?

Storage significantly affects green coffee grading by altering moisture content and promoting the degradation of volatile compounds. Improper storage, such as exposure to high humidity or fluctuating temperatures, can lead to mold, mustiness, or 'baggy' flavors, which lower the quality score. Maintaining stable, cool, and dry conditions is essential to preserve the physical and sensory integrity of the beans.

COFFEE GRADINGFreshness & storage
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COFFEE GRADINGAnswer

What is a "defect-free" coffee bean?

A 'defect-free' coffee bean is one that shows no physical or sensory imperfections, such as insect damage, discoloration, or fermentation issues. In the context of green coffee grading, a batch is considered defect-free when it meets strict standards, such as the Specialty Coffee Association's 'Specialty Grade' criteria, which allows for zero primary defects and very few secondary defects per sample.

COFFEE GRADINGFermentationSpecialty coffee
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COFFEE GRADINGAnswer

What is the difference between screen 14 and screen 16?

The difference between screen 14 and screen 16 refers to the physical size of the coffee bean, measured in 1/64th of an inch. A screen 14 bean passes through a 14/64-inch mesh, while a screen 16 bean is larger, requiring a 16/64-inch mesh. Larger screen sizes are often associated with higher quality and more uniform roasting potential.

COFFEE GRADINGRoasting
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COFFEE GRADINGAnswer

What is a "triage" in coffee grading?

In coffee grading, 'triage' refers to the process of sorting out defective beans from a batch. It is a critical quality control step where workers or machines remove beans that are broken, insect-damaged, discolored, or otherwise imperfect. This sorting ensures that the final lot meets the required quality standards and prevents off-flavors from contaminating the rest of the coffee.

COFFEE GRADING
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COFFEE GRADINGAnswer

How do you identify an underdeveloped coffee bean?

An underdeveloped coffee bean is typically identified by its pale, yellowish, or 'grassy' appearance in the green state, or by a lack of expansion and a 'hay-like' or 'vegetal' flavor after roasting. These beans often result from poor drying practices or harvesting cherries that were not fully mature, leading to a lack of sugar development and poor cup quality.

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