What is a "sample" in coffee grading?
A sample in coffee grading is a small, representative portion of a larger lot of green coffee used for quality assessment. Before a roaster or importer commits to buying a large shipment, they evaluate this sample to determine the coffee's physical quality, moisture content, and sensory profile through cupping, ensuring it meets their specific standards and requirements.
In the coffee trade, you rarely buy a container of coffee without first seeing a sample. A sample is the 'proof of concept' for a lot of coffee. It is a small, carefully selected portion of the harvest that is sent from the exporter to the buyer to represent the quality of the entire shipment. The importance of this sample cannot be overstated; it is the basis for the entire contract. If the final shipment does not match the quality of the sample, the buyer has the right to reject the coffee or renegotiate the price.
When a roaster receives a sample, they treat it with the same level of care as the final product. They will perform a physical analysis to check for defects, moisture, and size, and then they will roast and cup it to evaluate its flavor. This process is the gatekeeper of quality. If the sample doesn't meet the roaster's standards—perhaps it has a slight 'musty' note or the acidity is too low—they will simply pass on that lot and look for another. The sample is the roaster's primary tool for ensuring that the coffee they buy will result in the flavor experience they want to offer their customers.
It is also a tool for communication. If a roaster likes a sample but thinks it could be improved—perhaps by a slightly different drying process—they can provide that feedback to the exporter. The sample becomes a bridge between the roaster's needs and the farmer's capabilities. It is a collaborative process that drives the continuous improvement of coffee quality across the industry.
For the reader, the sample is the reason you can trust the coffee you buy. It is the result of a rigorous selection process that ensures only the best beans make it into your cup. When you enjoy a coffee with a complex, vibrant flavor, you are tasting the result of a sample that was carefully evaluated and approved by a professional. In practice, the next time you see a roaster talking about 'pre-shipment samples' or 'arrival samples,' you are seeing the behind-the-scenes work that makes specialty coffee possible.
- · https://drwakefield.com/news-and-views/intro-to-grading-and-terminology/
- · https://achillescoffeeroasters.com/blogs/specialty-coffee-blog/how-coffee-is-graded-scores-defects-bean-size-quality-and-specialty-coffee-standards