COFFEE GRADING

What is a "full natural" grade?

Quick answer

A "full natural" grade refers to coffee processed using the natural method, where the entire coffee cherry is dried with the seed inside. This processing technique, often associated with high-quality specialty coffee, requires careful sorting to ensure the grade reflects the absence of defects like over-fermented or damaged beans, which are more common in this labor-intensive method.

The real story

The term "full natural" describes a specific post-harvest processing method where the coffee cherry is dried in its entirety, with the seed (the bean) still encased in the fruit. Unlike the washed process, where the fruit is removed before drying, the natural process allows the bean to absorb the sugars and flavors of the drying fruit pulp. This often results in a cup profile characterized by heavy body, intense sweetness, and distinct fruit-forward notes, such as berries or stone fruits.

When we talk about a "full natural" grade, we are referring to the quality classification of these beans after they have been dried and milled. Because the fruit remains on the bean for an extended period, the natural process is inherently riskier than other methods. If the cherries are not turned frequently or if they are dried on the ground, they can easily develop defects like mold, over-fermentation, or "stinker" beans. Consequently, the grading of natural coffees often places a heavy emphasis on visual uniformity and the absence of these specific processing-related flaws.

Grading a full natural coffee involves the same rigorous defect counting as any other specialty coffee. However, because the drying process is more complex, the sorting stage is critical. Producers must use raised beds or mechanical dryers to ensure even moisture content, and then hand-sort the dried cherries to remove any that have fermented improperly. A high-grade natural coffee will show a consistent color and size, indicating that the drying was managed carefully and the sorting was thorough.

For the consumer, the "full natural" designation is a promise of a specific sensory experience. It tells you that the coffee was likely grown in a region with a dry climate suitable for this method, such as parts of Ethiopia or Brazil. When you see this on a bag, you can expect a more syrupy, complex cup compared to the cleaner, more acidic profile typically associated with washed coffees.

In practice, the grade of a natural coffee is the final verdict on the producer's ability to manage the drying process. A high-scoring natural coffee is a testament to the skill required to balance the intense fruitiness of the process with the cleanliness required for specialty status. It means the producer successfully navigated the challenges of the natural method to deliver a clean, vibrant, and delicious cup.

Sources we lean on
  • · https://keffacoffee.com/resources/quality/green-coffee-defects-grading
  • · https://sca.training/howtocoffee/2021/1/12/coffee-grading-101