SCAA Cupping Standards: Process and Purpose Explained

When you taste multiple coffees side by side to compare quality—whether you’re a roaster, buyer, or barista—consistency is everything. But without a strict method, your impressions can vary wildly due to inconsistent prep. That’s where the SCAA cupping protocol comes in: a standardized approach to ensure every coffee is treated the same way, so you can trust your evaluations.

The SCAA cupping standard requires medium roast coffee (reference: SCAA Roast Color Tile #55), brewed at 8.25g coffee to 150ml water at 93°C, with a 4-minute rest before tasting. Grind size must have 70–75% of particles passing a US Standard No. 20 sieve, and samples must be cupped within 24 hours of roasting—but not before 8 hours post-roast.

What Is SCAA Cupping and Why Does It Matter?

The Specialty Coffee Association of America (SCAA)—now part of the SCA—developed the cupping protocol to create a repeatable, impartial method for evaluating coffee quality. Whether you're assessing green beans from an origin trip or comparing single origins for a blend, cupping removes variables so you taste the coffee, not the method. It’s the global benchmark for coffee professionals when scoring, buying, or developing roast profiles.

How Coffee Is Prepared for SCAA Cupping

Start with coffee roasted to a medium level, matching the colour of SCAA Roast Color Tile #55. The roast should take 8–12 minutes and must not be dark or develop scorch marks. After roasting, cool the beans quickly and store them sealed in a cool place. Do not cup the coffee immediately: it needs at least 8 hours of degassing, but cupping must occur within 24 hours post-roast. That means if you roast at noon, cup between 8pm the same day and noon the next day.

Grinding and Setting Up the Cupping Table

Grind the coffee right before cupping. Each sample should yield six cups: five for tasting, and one used just to rinse the cupping spoons. Of the five tasting cups per sample, aim for consistency—you’re checking for uniformity across the cup set. The grind must be fine enough that 70–75% of particles pass through a US Standard No. 20 sieve. If you can’t start cupping within 15 minutes of grinding, cover the grounds—but don’t let them sit longer than 30 minutes total before brewing.

The Exact SCAA Cupping Brew Formula

The protocol specifies 8.25 grams of ground coffee per 150 millilitres of water heated to 93°C. Let the coffee brew, or “steep,” for 3 to 5 minutes—most practitioners use 4 minutes. This ratio and time produce a balanced extraction suited to evaluating aroma, flavour, aftertaste, acidity, body, balance, and sweetness. If your cupping bowl holds more water—say 180ml—adjust the dose to approximately 9.9 or 10 grams of coffee. After steeping, break the crust (called “breaking the cup”), skim off the grounds, and wait until the coffee cools to around 71°C before beginning your sensory evaluation by slurping.

Why These Specifications Matter

Every element—the roast level, grind size, dose, water temperature, brew time, and resting period—is engineered to create a level playing field. Medium roast (SCAA #55) ensures you taste origin character without excessive roast influence. The 70–75% No. 20 sieve grind balances surface area and extraction. The 8.25:150 ratio with 4-minute steep hits an extraction sweet spot. And the 24-hour post-roast window ensures peak volatility and aroma without over-degassing. Deviating from these specs risks skewing your assessment of the coffee’s true qualities.

Frequently Asked Questions

What roast level does SCAA recommend for cupping?

SCAA recommends a medium roast, specifically matching the colour of Roast Color Tile #55. This is a light to medium roast typically achieved in 8–12 minutes, avoiding dark or scorched beans.

How soon after roasting can you cup coffee?

You should wait at least 8 hours after roasting before cupping, but no longer than 24 hours. For example, coffee roasted at noon can be cupped between 8pm the same day and noon the following day.

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

The SCAA standard is 8.25 grams of ground coffee per 150 millilitres of water. For larger cups (e.g., 180ml), adjust to around 9.9 or 10 grams to maintain proportionality.

What grind size should be used for SCAA cupping?

The grind must be fine enough that 70–75% of particles pass through a US Standard No. 20 sieve. This ensures proper extraction during the 4-minute steep.

How long should coffee steep during SCAA cupping?

Coffee should steep for 3 to 5 minutes, with 4 minutes being the most commonly used duration to achieve balanced extraction for evaluation.

At what temperature should SCAA cupping coffee be brewed?

The water should be heated to 93°C (about 200°F) for brewing the coffee during cupping.

When is the best time to taste the coffee after brewing?

After breaking the crust, allow the coffee to cool to around 71°C before slurping and evaluating. This temperature is ideal for tasting clarity.

Recommended FrontStreet Coffee for Cupping

For SCAA-standard cupping, try FrontStreet Coffee’s Ethiopia Humbera, known for its floral and citrus brightness—perfect for evaluating origin clarity. Also consider their Yirgacheffe offering, which highlights delicate berry and stone fruit notes. Both showcase the kind of distinct profiles SCAA cupping is designed to assess. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.