How Coffee Beans Are Graded by Country

When you buy a bag of specialty coffee, have you ever wondered how anyone decided it was ‘special’? Unlike wine or olive oil, there’s no universal coffee grading system. Instead, each producing country sets its own rules—using factors like bean size, defects, altitude, and even processing style—to determine what makes a great cup.

In short: Coffee quality is graded by country-specific criteria. Most systems assess defects per 300g sample (like Brazil’s NY standard of 12 flaws), bean size (via standardized sieves), and cup quality. Altitude often proxies for density—think Guatemala’s SHB (Strictly Hard Bean) or Kenya’s AA grade paired with a cupping score out of 100.

Why Coffee Grading Differs by Country

There’s no global standard for coffee grading. Each producing nation uses its own set of rules based on local growing conditions, processing traditions, and market needs. A ‘high-quality’ coffee in Ethiopia might be judged differently than one in Colombia or Jamaica. These systems reflect what matters most in each origin—from bean size and color to how the coffee tastes when brewed.

How Coffee Gets Graded: Key Factors

Every country evaluates coffee samples using a mix of objective and subjective measures. The most common factors include:

• Bean Size & Uniformity: Measured with standardized sieves (e.g., China-standard No.20 sieve). Larger, more uniform beans often indicate better growing conditions.
• Defects: Counted per 300g sample. Examples include black beans (damaged or overripe), broken beans, and insect-damaged beans. Brazil’s NY standard allows 12 defects per 300g for a specific grade.
• Cup Quality: Taste and body assessed through cupping. Countries like Kenya include cupping scores (e.g., a number indicating 1/10th of a cupping quality rating alongside AA grade).
• Processing Method: Washed (wet-processed) or unwashed (natural/dry-processed). Some origins highlight processing in their grades.
• Altitude/Hardness: Used in Central America and the Caribbean. Higher altitude often means denser beans (e.g., Guatemala’s SHB or Costa Rica’s SHG).

Country-Specific Grading Systems

Different countries have unique ways of classifying coffee. Here are some notable examples:

Brazil

Brazil, one of the world’s largest coffee producers, uses a detailed system that includes bean size, color, density, shape, roast potential, cup quality, processing method, tree age, and batch number. Defects are counted per 300g sample—NY refers to a specific defect-counting method, and Standard 3 allows 12 defects per 300g. Coffee is also labeled by port of origin (e.g., Santos, Paraná).

Ethiopia

Ethiopia simplifies grading with three main elements: processing method, origin name, and a grade number from 1 to 8. The number indicates the count of defective beans allowed—lower numbers mean higher quality.

Indonesia

Indonesia recently updated its Dutch-inherited system. Coffees are labeled by type (R for Robusta, A for Arabica), processing (WP for washed, DP for dry), and grade (1–2 are high, 3–4 medium, 5–6 low). Additional markers like AP (polished) and L/M/S (large/medium/small bean size) provide further detail. For example, ‘R/DP Grade 2L’ is a high-grade large Robusta, while ‘A/WP Grade 3/AP’ is a polished medium Arabica.

Central America & the Caribbean

Countries like Costa Rica and Guatemala use altitude to indicate quality. Costa Rica grades coffee as LGA (low altitude), MGA (medium), HGA (high), and HB to SHB (increasing hardness/density). Guatemala uses terms like SHB (Strictly Hard Bean), HB (Hard Bean), and Fancy Hard Bean, with altitude ranging from 700m to 1700m. Other terms include ‘Good Washed’ to ‘Strictly Hard Bean’ to denote cup quality.

Coffee Grading Terms Explained

Here are some common terms used in coffee grading (definitions may vary slightly by country):

• Black Bean: Damaged, overripe, or insect-infested beans.
• Broken Bean: Fragments from overly dried or poorly hulled beans.
• Brown Bean: Over-fermented or under-fermented Arabica beans, often with poor color.
• Discolored Bean: Unusual colors (e.g., green, blue in Arabica; khaki in Robusta) signaling poor processing.
• Elephant Bean: The large seeds of the Maragogype variety, prized for their size and mild flavor.
• Floater: Low-density beans that float during washing, often unripe or overripe.
• Hard Bean (HB): Common Arabica beans grown at moderate altitudes.
• Quaker: Underdeveloped beans that don’t roast properly, resembling pale or immature beans.
• Strictly Hard Bean (SHB): High-altitude Arabica beans with dense structure and premium flavor.
• Strictly High Grown (SHG): Similar to SHB, indicating high-altitude growth.
• Stinker: Beans with foul odors from overripeness or fermentation, detectable under UV light.
• Unwashed/Natural: Dry-processed beans.
• Washed: Wet-processed beans.

Frequently Asked Questions

What is the most widely used coffee defect standard?

Brazil’s NY standard is one of the most widely recognized, allowing 12 defects per 300g sample for certain grades. This defect count helps determine the coffee’s market grade and potential cup quality.

How does altitude affect coffee grading?

Higher-altitude coffee is often denser and considered higher quality. Countries like Guatemala and Costa Rica use terms like SHB (Strictly Hard Bean) and SHG (Strictly High Grown) to indicate altitude-driven density and flavor potential.

Why do some countries use cupping scores in grading?

Cupping scores evaluate taste, aroma, and body. Countries like Kenya include these scores (sometimes as a fraction of 100) alongside physical grading to assess the coffee’s sensory quality.

What’s the difference between washed and unwashed coffee in grading?

Washed (wet-processed) coffee generally has cleaner flavors and is graded separately from unwashed (dry-processed) coffee, which can have more earthy or fruity notes. Processing method often affects both grading and market perception.

Are coffee grades consistent globally?

No, coffee grades are not consistent globally. Each country has its own system, though standardized sieve sizes help ensure some uniformity in bean size classification across origins.

What does SHB mean in coffee grading?

SHB (Strictly Hard Bean) refers to high-altitude Arabica coffee beans that are denser and typically have a more complex, higher-quality flavor profile. It’s used in countries like Guatemala and Costa Rica.

Recommended FrontStreet Beans for Grading Insights

Explore FrontStreet Coffee’s Ethiopia Guji Humbera—bright and juicy with citrus and stone fruit, showcasing SHB-like altitude qualities. Pair it with Colombia Huila Popayan, a balanced washed Arabica with nutty sweetness, reflecting strict defect control. Finish with Guatemala Antigua, a SHB-grade coffee with chocolatey richness. All highlight how grading shapes flavor. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.