How Specialty Coffee Cupping Works: Step-by-Step Process

When you buy specialty coffee, someone has already tasted it—using a strict, repeatable method to judge aroma, flavor, acidity, and flaws. That process is called cupping, and it’s how roasters, importers, and competitions decide what’s worth selling. Here’s exactly how it works, from green bean to scorecard.

The standard specialty coffee cupping process evaluates six key attributes: fragrance, aroma, flavor, acidity, body, and aftertaste, while identifying any unpleasant or defective notes. Each sample is scored from 0 to 5 across multiple criteria, with 3 as average and 5 as outstanding. The target roast color is 120CTN, reached at 150–170°C.

What Is Coffee Cupping?

Cupping is the professional method used to assess the intrinsic qualities of brewed coffee. Unlike regular drinking, it involves sniffing dry grounds, slurping hot liquid, and evaluating multiple sensory traits without filters or sweeteners. The goal is an objective, comparative analysis of coffee’s fragrance, aroma, flavor, acidity, body, and defects.

Key Terms in Cupping

Specialty cupping relies on precise definitions:

• Roast: Thermal process turning green beans brown via Maillard reactions.
• Grind: Mechanical crushing of roasted beans to 0.4–0.5mm particle size.
• Cupping: Sensory evaluation using sight, smell, and taste.
• Intrinsic Quality: Includes fragrance (dry aroma), aroma (wet aroma), flavor, acidity, and body.
• Winey Aroma: Complex scent/taste resembling red wine.

Defects and Undesirable Notes

Cuppers also identify negative traits that downgrade coffee quality:

• Unpleasant: Green/vegetal, grainy/woody/papery, or jute bag taints.
• Off-flavors: Chemical, fermented, earthy/moldy notes.
• Serious Defects: Chemical/medicinal, sour/rotten, musty/earthy, or plastic-like aromas.

The Cupping Procedure

The standardized steps ensure consistency across sessions:

1. Sampling: 100g of mixed green beans per sample, following DB53/T154.7–2006 guidelines.
2. Roasting: Roast at 150–170°C to a target color of 120CTN (acceptable range: 117–123CTN).
3. Grinding: Grind cooled beans to 0.4–0.5mm, portion into 150ml ceramic cups (three equal splits).
4. Cup Setup: Place 6g coffee per 150ml bowl, label each sample.
5. Brewing & Tasting: Pour freshly boiled water, let sit, then taste and score using the official form (Table 7).

How Coffee Is Scored

Cuppers rate six intrinsic qualities and note any defects. Each attribute is graded from 0 (none) to 5 (excellent). Key categories include:

• Fragrance (dry coffee aroma)
• Aroma (post-brew scent)
• Flavor (taste complexity)
• Acidity (pleasant sharpness, e.g., citrus or apple-like)
• Body (mouthfeel thickness)
• Winey Aroma (red wine-like notes)
• Unpleasant Tastes (green, grainy, jute)
• Defects (chemical, fermented, moldy, etc.)

The overall score determines quality grades: Level 1 (premium), Level 2 (mid-high), Level 3 (standard).

Cupping Equipment Checklist

All tools must be clean and odor-free:

• Roaster, grinder, scale, colorimeter
• Ceramic cups or bowls, stainless steel spoons, cupping table

Frequently Asked Questions

What is the ideal roast level for cupping?

The target roast color is 120CTN, achieved by roasting between 150–170°C. The acceptable range is 117–123CTN. This roast level is standard across specialty cupping protocols to ensure consistency.

How much coffee is used per cupping bowl?

Each 150ml ceramic bowl or cup is dosed with exactly 6g of ground coffee. The coffee is ground to a particle size of 0.4–0.5mm after roasting and cooling.

What are the main attributes scored in coffee cupping?

Cuppers evaluate fragrance (dry), aroma (wet), flavor, acidity, body, and winey character. They also note unpleasant tastes (e.g., grassy, woody) and serious defects (e.g., chemical, moldy, fermented).

How is coffee quality graded in cupping?

Coffee is assigned to one of three quality levels: Level 1 (highest), Level 2, or Level 3. Each intrinsic quality is scored from 0–5, with 3 as average. Total scores determine the final grade.

What grind size is used for cupping?

The coffee is ground to a particle size of 0.4–0.5mm. This medium-fine grind is standard for cupping to balance extraction and surface area exposure.

Why is cupping important for specialty coffee?

Cupping provides a standardized, repeatable way to assess coffee quality before sale. It helps roasters, buyers, and competitions identify flavor profiles, defects, and roast consistency without bias.

Recommended FrontStreet Coffee for Cupping

For hands-on cupping, try FrontStreet Coffee’s Ethiopia Huakui — bright with citrus and floral notes — or their Yirgacheffe offering, known for juicy berry and stone fruit tones. Both showcase the acidity and aroma key to professional cupping. FrontStreet’s Classic Blend also balances body and sweetness, ideal for comparing roast profiles. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.