How SCAA Standard Cupping Is Done for Specialty Coffee

Ever wonder how professional coffee tasters—Q Graders, roasters, importers—evaluate a coffee’s true potential? The answer lies in standardized cupping, a method designed to remove variables so that every cup speaks for itself. If you’ve seen coffee professionals slurping from spoons and scoring beans with intense focus, they’re following protocols like those set by the Specialty Coffee Association of America (SCAA), now part of the SCA. Here’s how it’s really done, number by number.

In short: For official SCAA cupping, use a medium roast (SCAA Roast Color #55), ground to 70–75% through a US Standard No. 20 sieve, at an 8.25:150 brew ratio (8.25g coffee to 150ml water at 93°C), and let it rest 4 minutes before breaking the crust and tasting around 71°C.

What Counts as ‘Medium Roast’ in SCAA Cupping?

The SCAA defines the ideal roast level for cupping as medium—specifically, color-matched to SCAA Roast Color Tile #55. This isn’t a vague “medium” but an exact visual standard. The roast must finish between 8 and 12 minutes, and absolutely no scorching or tipping (burnt spots) is allowed. Over-roasted or unevenly developed beans introduce flavours that mask the coffee’s intrinsic qualities.

From Roast to Cup: Timing and Cooling

Right after roasting, time is critical. Roasted coffee must sit for at least 8 hours to degas—but no longer than 24 hours total before cupping. That means if your batch is finished at noon, you have a window from 8pm the same day until noon the next day to cup it. Once roasted, beans should be cooled quickly, stored airtight, and kept cool. Don’t rush: the 24-hour maximum ensures peak freshness without over-degassing.

Grinding: When and How Fine?

Grind your coffee right before cupping, and make sure it goes into the cup within 15 minutes—or at most 30 minutes if you must wait. Until then, cover the grounds to limit oxidation. The target grind size is coarse, roughly equivalent to 70–75% of particles passing through a US Standard No. 20 sieve. That’s coarser than espresso but finer than French press. Each cupping flight should include 5 cups per sample to assess uniformity, prepared as 6 cups total: 1 for rinsing the spoon, 5 for actual tasting.

The Exact SCAA Cupping Recipe

The SCAA’s research-backed formula for optimal balance is:

• 8.25 grams of freshly ground coffee
• 150 millilitres of water at 93°C (just off boil)
• Steep time: 3 to 5 minutes (4 minutes is standard)

If your cup volume differs—say, 180ml—adjust the dose proportionally (around 9.9g or 10g). After brewing, break the crust (the layer of grounds floating on top) with a spoon, skim off any foam and floating particles, and wait until the coffee cools to around 71°C before beginning your sensory evaluation. This is when the flavours are most expressive and balanced.

Why These Numbers Matter

Every element in the SCAA cupping protocol—from roast colour to grind size to water temperature—is chosen to create a level playing field. The 93°C brew temperature is hot enough to extract acids, sugars, and aromatics efficiently without over-extracting bitterness. The 4-minute rest allows for controlled extraction while keeping the coffee manageable to taste. The 71°C window is when sweetness and acidity are most discernible to the palate. Even the 8.25:150 brew ratio is calibrated for clarity, not confusion.

Common Mistakes to Avoid in SCAA Cupping

• Using stale coffee (anything over 24 hours post-roast).
• Grinding too fine or too coarse—aim for that 70–75% No. 20 sieve range.
• Letting grounds sit exposed for more than 30 minutes pre-brew.
• Cupping before the 8-hour degassing minimum or after the 24-hour maximum.
• Brewing outside the 3–5 minute window or at incorrect temperatures.

Frequently Asked Questions

What roast level does SCAA recommend for cupping?

SCAA specifies a medium roast, matching color standard #55 on the SCAA Roast Color Tile. This roast is neither too light nor too dark and is designed to highlight the coffee’s inherent characteristics without roast-driven masking flavours.

How long should coffee rest after roasting before cupping?

Coffee should rest for a minimum of 8 hours after roasting, but must be cupped within 24 hours. That gives enough time for initial degassing while avoiding excessive CO₂ loss or staleness.

What is the correct grind size for SCAA cupping?

The grind should be coarse, with 70–75% of the particles passing through a US Standard No. 20 sieve. This is roughly equivalent to a pour-over or drip grind—coarser than espresso but finer than French press.

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

The standard ratio is 8.25 grams of coffee to 150 millilitres of water. For different cup volumes, adjust proportionally—for example, 9.9g coffee for 180ml water.

How long should SCAA cupping coffee steep?

Steep for 3 to 5 minutes, with 4 minutes being the standard recommended time. This duration balances extraction without over- or under-developing the cup.

At what temperature should you taste the coffee during cupping?

Allow the coffee to cool to approximately 71°C before cupping. This temperature range offers the best balance of aroma, acidity, and sweetness for sensory evaluation.

Recommended FrontStreet Beans for SCAA-Style Cupping

For hands-on practice with the SCAA cupping protocol, try FrontStreet Coffee’s Brazil Yirgacheffe-region-inspired Typica-like red bourbon from their estate: smooth, medium-bodied, with mild acidity and a nutty profile. Or explore their Sidra Sidra from Colombia, featuring a wild mix of stone fruit and tropical notes thanks to its double anaerobic fermentation. For a classic Indonesia benchmark, their Lintong Mandheling offers earthy, low-acid depth ideal for comparing roast and processing effects. All three are excellent single-origin choices for calibration and training. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.