Cupping Protocol

Cupping is the industry-standard method for evaluating coffee quality. It is to coffee what a structured blind tasting is to wine: a disciplined, reproducible protocol that isolates the inherent characteristics of the bean from the variables of different brewing methods. By using a consistent cupping protocol, professionals can compare coffees from different origins, processes, and roasts on an even playing field.

The SCA cupping protocol is the most widely recognized standard. It requires specific equipment, including identical bowls of a set volume (typically 150–200 ml) and a precise coffee-to-water ratio, often 55 grams per liter. The coffee is ground to a specific particle size—usually slightly coarser than what is used for a standard drip brew—and the water temperature is strictly controlled, typically around 93°C (200°F).

The process begins with the evaluation of the dry fragrance, followed by the wet aroma after the water is added. After a set period of steeping, the 'crust' of grounds on the surface is broken with a spoon, releasing the aromatics. The cupper then skims off the remaining foam and, once the coffee has cooled to a specific temperature, begins the tasting process. This involves slurping the coffee from a spoon to aerate it, which helps distribute the liquid across the entire palate to assess acidity, body, sweetness, and aftertaste.

Why does this matter? For producers, exporters, and roasters, the cupping protocol is the primary language of quality. It allows a buyer in one country to communicate effectively with a farmer in another. If both parties follow the same protocol, they can agree on the quality and value of a lot, which is essential for fair trade and the specialty coffee market.

In practice, cupping is used for everything from roast assessments to grading green coffee for the specialty market. It is a skill that requires years of practice to calibrate one's palate. By following a rigorous protocol, cuppers minimize bias and ensure that their scores reflect the true quality of the coffee, rather than the influence of external factors like water chemistry or brewing technique.