How does the SCA cupping protocol work?
The SCA protocol is a standardized sensory analysis method used to evaluate coffee quality objectively. It involves brewing a specific ratio of coffee to water in uniform vessels, then assessing the aroma, flavor, acidity, body, and aftertaste at specific time intervals. This consistency allows professionals to grade coffee accurately and compare samples from different origins on a level playing field.
Sources show where the underlying information came from. They do not automatically make a claim correct, so disputed history, evolving science and uncertain claims should be labeled as such in the explanation itself.
The SCA protocol is the universal language of the industry. Without a standardized way to taste coffee, it would be impossible to trade high-quality beans across borders. The protocol is designed to remove as many variables as possible, ensuring that the focus remains entirely on the coffee itself. Everything is controlled: the grind size, the water temperature, the water chemistry, and even the size and shape of the bowls.
During a session, the coffee is ground to a specific coarseness and placed in the bowls. Hot water is poured over the grounds, and the coffee is left to steep for a set amount of time. The first step is the 'break'—the cupper uses a spoon to push aside the crust of grounds on the surface, releasing the trapped aromatics. This is the first chance to assess the fragrance of the coffee. After the crust is removed, the cupper waits for the coffee to cool to a specific temperature before beginning the tasting process.
As the coffee cools, its flavor profile changes. The protocol requires the cupper to taste the coffee at different stages—hot, warm, and cool—because different compounds become perceptible at different temperatures. The cupper uses a spoon to slurp the coffee, which sprays it across the palate, allowing for a full assessment of the acidity, body, and flavor notes. Each attribute is then scored on a scale, and any defects are noted. If a coffee has a defect, it is penalized, which can significantly lower its final score.
In practice, this protocol is what allows a buyer in London to trust the quality of a coffee grown in Ethiopia. It provides a common framework that ensures that when a coffee is labeled as '85 points,' it actually meets that standard. For the home enthusiast, learning the basics of the protocol is the best way to develop your palate. It teaches you to slow down, evaluate each attribute of the coffee, and articulate what you are tasting, turning a daily habit into a sensory exploration.
- ·https://dayescoffee.com/blogs/coffee-story/coffee-beans-grading-in-a-nutshellVerify source for reference 1 ↗