SCAA Cupping Guide: Protocol, Tools, and Scoring for Specialty Coffee

If you’ve ever wondered how professional coffee tasters—Q Graders, roasters, and green buyers—evaluate coffee consistently across origins and roasts, the answer lies in the SCAA Cupping Protocols. These standardized methods aren’t just for competition judges; they help ensure fair, repeatable assessments of coffee quality from cup to cup.

To score coffee fairly using SCAA methods, you’ll need 207–266ml ceramic or tempered glass cups (76–89mm diameter), 8.25g coffee per 150ml water, a brew temperature of 93°C (200°F), and a grind setting where 70–75% of grounds pass a US #20 sieve. Cup within 24 hours of roast, and score using the official SCAA form that separates flavor attributes from defect deductions.

Cupping Equipment & Setup

The SCAA mandates specific cupping tools to maintain consistency. Use only tempered glass or ceramic cups—no mixing materials—with a capacity of 207–266ml and a diameter of 76–89mm. Lids may be any material, but all cups in a session must be identical in material, size, and cleanliness (no odors, residues, or cross-material use such as glass with porcelain). This uniformity eliminates variables unrelated to the coffee itself.

Coffee Preparation & Roast Standards

Coffee must be roasted within 8–24 hours of cupping. Target a roast level where whole beans measure Agtron 58±1 and ground coffee 63±1 using an M-Basic Agtron device—or SCAA color chart equivalents: whole bean #55, ground #60. Roast duration should be 8–12 minutes with no tipping or scorching. Cool beans by air (not water) to room temperature, then store them in sealed bags away from light and heat (no refrigeration or freezing).

Cupping Ratios, Water, and Grind

Use a strict brew ratio of 8.25g coffee per 150ml water. Determine the exact coffee weight per cup based on your vessel’s capacity, aiming for ±0.25g accuracy. Grind to a sieve specification where 70–75% of particles pass a US #20 standard sieve. Always rinse the grinder with a small amount of the same coffee before grinding each sample to prevent cross-contamination. Use fresh, odor-free water with total dissolved solids (TDS) between 125–175ppm. Heat water to 93°C (200°F; adjust slightly for altitude), and pour it to fully saturate the grounds. Fill each cup to the brim for consistency, and let the coffee rest (bloom and develop) for 3–5 minutes before breaking the crust.

How to Cup Coffee: Step-by-Step

The SCAA cupping process follows a precise sequence to evaluate aroma, flavor, and mouthfeel accurately. Begin by inspecting dry grounds for aroma (dry fragrance). After pouring hot water, assess the wet aroma. At the 4-minute mark, break the crust by stirring the grounds three times with a spoon without excessive agitation, then evaluate the released wet aroma again. Remove floating grounds quickly. Taste the coffee in three phases: first while hot (focus on flavor and aftertaste), then as it cools (assess acidity, body, and balance), and finally near room temperature (evaluate uniformity, cleanliness, and sweetness). Always note the temperature to avoid burns and ensure you’re tasting the intended attributes at the right stage.

Using the SCAA Cupping Score Sheet

The official SCAA cupping form breaks evaluation into three sections: roast level indication, flavor attribute scoring (quality and intensity), and defect scoring. Each of the five cups per sample is rated across multiple attributes. Horizontal scales score quality (0–10, in 0.25 increments), while vertical scales on aroma, acidity, and body assess intensity or thickness. The form includes space to describe dry and wet aromas, and overall flavor notes. Total flavor scores are calculated by adding individual attribute scores, then subtracting defect points. Each attribute is scored per cup (five cups total per sample), and the lowest-scoring defects define the penalty. Minor (taint) defects cost 2 points per cup; major (fault) defects cost 4 points per cup—if both occur on the same cup, the fault level applies.

Defects, Scoring, and Final Assessment

Defects are classified as either minor (taint) or major (fault). A minor defect (e.g., slight off-flavor) deducts 2 points per affected cup; a major defect (e.g., overwhelming sourness or mustiness) deducts 4 points per cup. If both occur on the same cup, the fault level is applied. The final cup score equals the total flavor score minus total defect points. Individual cup scores range up to 10, with each of the 10 attributes—fragrance/aroma, flavor, aftertaste, acidity, body, balance, uniformity, cleanliness, sweetness, and overall preference—contributing to the total. The SCAA does not officially define score bands, but expert sources often group results into tiers: Rare (outstanding, highly distinctive), Origin (distinctive but less rare), Specialty (good, typical of most specialty lots), and Non-Specialty (notable defects affecting quality).

Cupping Workflow in Practice

In practice, the cupping process flows as follows: First, smell the dry grounds to assess initial aromas. After pouring water, evaluate the evolving wet aromas. At 4 minutes, break the crust three times with a spoon, inhale the intensified aromas, then remove the floating grounds. Allow the coffee to rest for 3–5 minutes before tasting. Start by sipping lightly to acclimate to temperature, then progress to deeper slurps to capture aroma, flavor, and texture. Taste in three temperature stages to perceive the full range of attributes. Record observations for each attribute per cup, calculate totals, and subtract any applicable defect penalties to determine the final score.

Frequently Asked Questions

What is the ideal coffee-to-water ratio for SCAA cupping?

The SCAA specifies a brew ratio of 8.25g of coffee per 150ml of water. Measure the coffee weight precisely, allowing a tolerance of ±0.25g per cup to ensure consistency across samples.

What grind size should I use for SCAA cupping?

Grind the coffee so that 70–75% of the particles pass through a US #20 standard sieve. This medium-coarse grind is essential for balanced extraction during the cupping process.

What water temperature is correct for cupping according to SCAA?

Use water heated to 93°C (200°F). Adjust slightly for altitude, but avoid re-heating water; always use fresh water to ensure optimal extraction and aroma release.

How should coffee be roasted for SCAA cupping?

Coffee must be roasted within 8–24 hours before cupping. Target an Agtron whole bean reading of 58±1 and ground reading of 63±1, or SCAA color chart values of whole bean #55 and ground #60, with an 8–12 minute roast time and no bean scorching.

How are defects scored in the SCAA cupping form?

Defects are categorized as minor (taint, 2 points per cup) or major (fault, 4 points per cup). If both occur on the same cup, the fault score applies. Deduct the appropriate points from the total flavor score to get the final cup score.

What is considered a good final score in SCAA cupping?

While the SCAA does not officially define score bands, a final score of 80 or higher is widely recognized as Specialty grade. Informal tiers include Rare, Origin, Specialty, and Non-Specialty based on flavor distinction and defect presence.

Recommended FrontStreet Coffee for Cupping

Try FrontStreet Coffee’s Ethiopia Guji Natural Huakui for floral and stone fruit notes, or their Colombia Huila Excelso for balanced citrus and caramel. Both showcase distinct origin traits ideal for SCAA-style evaluation. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.