Introduction:As one of Ethiopia’s most iconic specialty coffee regions, Yirgacheffe often leaves coffee enthusiasts puzzled by its G1 and G2 grades. This article delves into Ethiopia’s official coffee grading system, exploring everything from physical characteristics and cupping standards to actual flavor profiles. It highlights the subtle differences between G1 and G2 in terms of green bean and roasted bean appearance, as well as extraction flavors, and provides practical references to help you make a more informed choice based on your preferences.

Yirgacheffe was originally just a small town within Ethiopia’s Sidamo region. With its high altitude, ancient volcanic soils rich in minerals, and significant influence from the Indian Ocean monsoon, it enjoys a distinct dry and wet season climate that is ideal for growing Arabica coffee. Today, Yirgacheffe is not only a regional name but also represents a distinctive coffee flavor profile — a combination of bright acidity, floral and fruity aromas, and a tea-like aftertaste.

When purchasing Yirgacheffe coffee beans, the commonly seen G1 and G2 grade labels actually stem from Ethiopia’s official coffee grading system. Understanding the differences between these two grades can help you select beans that better match your taste expectations. This article provides a comprehensive comparison covering the grading system, scoring criteria, appearances of green and roasted beans, and actual cupping flavors, taking you deep into the various characteristics of Yirgacheffe G1 and G2.

Ethiopia’s coffee grading was originally overseen by the CLU (Cupping and Liquoring Unit) under the country’s Ministry of Agriculture. This unit was primarily responsible for quality control of exported coffee, including grade classification. Before the establishment of the ECX (Ethiopia Commodity Exchange), the export grades for washed coffee were divided into G1 and G2, while sun-dried coffee only had G3, G4, and G5, with sun-dried beans maxing out at the G3 grade.

With the establishment of the ECX, the grading system was adjusted and unified. Although washed and sun-dried beans still use the G1 to G9 grade designations, the evaluation method shifted to a combination of “physical characteristics” and “cupping flavor performance.” Specifically, the ECX classifies all coffee by processing method into Washed and Natural, and then further divides them into three categories: Specialty (premium grade), Commercial (commercial grade), and Local / Domestic (for local or domestic consumption). Only the Specialty and Commercial categories are suitable for export, while the Local grade is mainly supplied for the domestic market.

In terms of specific scoring, both washed and sun-dried beans are evaluated based on two major criteria: physical characteristics (40%) and cup quality (60%). For washed beans, the physical characteristics score is broken down into: defect count (20%), bean size (10%), color (5%), and aroma (5%); the cup quality includes: cleanliness (15%), acidity (15%), mouthfeel (15%), and flavor characteristics (15%). For sun-dried beans, the defect count carries a higher weight (30%), and aroma accounts for 10%. The four cup quality components share the same weight distribution as for washed beans.

All coffee beans are first categorized into nine grades from G1 to G9 based on the above criteria. Among these, G1 to G3 are further cupped according to SCAA standards. If the cupping score reaches 85 or above, they are classified as Q1 (Premium grade); scores between 80 and 85 are classified as Q2; scores below 80, even if the beans are G1 or G2, are only listed as the general G3 grade. Only Q1 and Q2 are considered true Specialty Coffee, while G4 to G9 are collectively classified as Commercial Grade.

Taking the most common washed Yirgacheffe as an example, G1 grade green beans must have 0 to 3 defective beans per 300 grams, while G2 allows 4 to 12 defective beans. This means G1 significantly outperforms G2 in defect rate, which directly affects the final cup purity and overall score. In practice, even if the defect count meets G1 standards, the beans may still be downgraded to G2 if the cupping score does not reach a certain level (usually above 91). Therefore, the difference between G1 and G2 lies not only in defect count but also closely relates to the final sensory evaluation results.

Observing the appearance of washed Yirgacheffe G1 and G2 green beans, the two are often very similar in size, shape, and color. However, in detail, G2 is more prone to insect-damaged beans, broken beans, or other noticeable defects. Although preliminary screening is conducted before export, without further manual sorting, these defects are still more easily identifiable in G2.

As for roasted beans, since most importers or roasters perform manual defect sorting before and after roasting, the visual differences between G1 and G2 at the roasted bean stage are usually not obvious. However, tracing the entire supply chain, G1 maintains an advantage in overall consistency and purity due to its lower initial defect rate.

In terms of flavor performance, cupping comparisons of washed Yirgacheffe G1 and G2 both exhibit typical citrus notes, fruit-tea aromas, honey sweetness, and berry aftertastes. However, G1 performs better overall in cleanliness, aroma complexity, and flavor clarity, delivering a sharper flavor profile with more distinct layers. In contrast, while G2 also offers bright acidity and a floral-fruit foundation, its overall expression is slightly more subdued, with slightly less refined aroma and shorter aftertaste.

In summary, the differences between Yirgacheffe G1 and G2 mainly lie in defect rate, cupping score, and final flavor purity. If you’re seeking a more refined, consistent, and layered coffee experience, G1 is usually the better choice. If you’re on a budget or want to explore the classic flavors of Yirgacheffe without insisting on top-tier performance, G2 can still deliver a satisfying fruitiness and bright acidity. Understanding these differences can help you make a more personalized and budget-conscious decision when purchasing Yirgacheffe coffee beans.

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