Introduction:As one of Ethiopia’s most representative specialty coffee regions, Yirgacheffe’s G1 and G2 grade beans are commonly seen in the market. However, many consumers still have only a vague understanding of the differences between the two. This article delves into Ethiopia’s official grading system, exploring everything from defect rates and cupping standards to actual flavor profiles, to help you understand the real distinctions between G1 and G2, and provide practical guidance for selecting high-quality specialty coffee beans.

Yirgacheffe is a renowned high-altitude coffee-growing region in southern Ethiopia, globally celebrated for its distinctive citrus, floral notes, and bright acidity. Among the various Yirgacheffe coffee beans, the common G1 and G2 grades often leave consumers puzzled. What exactly do these two grades represent? Which one is of higher quality? The answer lies in Ethiopia’s coffee grading system.

Ethiopia’s coffee grading is overseen by the official body CLU (Cupping and Liquoring Unit), which is part of the Ministry of Agriculture and is responsible for quality control and grade determination of exported coffee. Prior to the establishment of ECX (Ethiopian Commodity Exchange), washed coffee was divided only into G1 and G2 grades, while natural-processed coffee ranged from G3 to G5, with G3 being the highest grade among natural processes.

With the establishment of ECX, the grading system was significantly adjusted. While washed coffee retained the G1 and G2 grades, natural-processed coffee saw the introduction of a G1 grade for the first time, leading to the appearance of both natural G1 and G2 products on the market, and G3 gradually fading from the mainstream. The new system not only considers the number of defects but also comprehensivelyevaluates physical characteristics and cupping flavor performance, making the grading criteria more scientific and rigorous.

Currently, Ethiopian coffee is mainly divided into three categories based on processing methods:

• Specialty (premium grade, available in both washed and natural processes): With minimal defects and outstanding cupping flavors, primarily targeting the international market;
• Commercial (commercial grade, also divided into washed and natural): Not meeting premium standards, but still above domestic consumption grade;
• Local / Domestic (local market grade): Mostly consisting of defective beans, unripe beans, or poorly stored coffee, mainly supplied for domestic use.

Among them, Specialty and Commercial are export grades, while Local is for domestic consumption only.

According to ECX’s scoring system, all coffee is first categorized into washed and natural processes, then graded based on the following criteria:

Scoring breakdown for washed coffee:

• Physical characteristics account for 40%: including defect count (20%), bean size (10%), color (5%), and aroma (5%);
• Cupping quality accounts for 60%: including cleanliness (15%), acidity (15%), mouthfeel (15%), and flavor characteristics (15%).

Scoring breakdown for natural coffee:

• Physical characteristics account for 40%: with defect count making up 30% and aroma 10%;
• Cupping quality also accounts for 60%: with the same items as washed coffee and identical weightings.

After scoring, all coffee is divided into nine grades from G1 to G9. Among them,G1 to G3 are further cupped according to SCAA standards.If the cupping score reaches 85 or above, it is rated as Q1 grade; scores between 80 and 85 are classified as Q2 grade; scores below 80, even if they fall under G1, G2, or G3, are ultimately listed as G3 grade. Q1 and Q2 are considered premium grade (Specialty Grade), while G4 to G9 are all grouped under commercial grade (Commercial Grade).

Regarding specific defect rate standards,washed G1 grade coffee beans allow only 0 to 3 defective beans per 300 grams of green beans; whereas G2 allows 4 to 12. Although there may be slight variations in actual trading defect assessments, G1 has noticeably stricter defect control, which is one of the main reasons why its flavor purity is generally superior.

It is worth noting that even if the defect count meets G1 standards, if the cupping score does not reach a certain level (for example, below 91 points), it may still be downgraded to G2. Therefore, the difference between G1 and G2 lies not only in the number of defects, but cupping performance is also a key indicator.

After understanding the grading system, let’s now compare the actual differences in appearance between Yirgacheffe G1 and G2 green beans and roasted beans.In terms of green beans, G1 and G2 are almost indistinguishable in size and shape, but G2 is more prone to containing insect-damaged beans or other obvious defects. Although both undergo manual sorting after roasting at the green and roasted bean stages, making them nearly impossible to tell apart visually, the initial difference in defect rates will still be reflected in subsequent flavor performance.

In terms of flavor performance, through actual cupping comparisons of both washed Yirgacheffe G1 and G2 beans, it can be observed that both exhibit typical characteristics such as citrus, berries, honey, and fruit tea. However,G1 demonstrates superior cleanliness and flavor complexity, with more concentrated aromas, a crisper mouthfeel, and a bright acidity accompanied by delicate floral notes. In comparison, while G2 also possesses these basic traits, its overall flavor clarity and complexity are slightly weaker, and the mouthfeel is somewhat flatter.

In summary,the main differences between Yirgacheffe G1 and G2 lie in defect rate, cupping score, and final flavor performance. For coffee enthusiasts seeking higher quality and purer flavors, G1 is usually the better choice, though G2 still offers excellent value and flavor potential. Understanding these grading details can help you make more informed decisions when selecting Yirgacheffe coffee beans.

The above content is compiled by CoffeeHunters, a coffee news website.