Yirgacheffe Kochere G2 Coffee vs G1: Differences, Flavor Profile, and Taste Overview

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Kochere Production Area

Kochere is situated on a plateau at an altitude of 1,650-1,800 meters.

The main harvest season in Ethiopia is November and December. Most farmers do not use modern farming methods; instead, they manually care for the coffee trees without using harmful pesticides or herbicides. Therefore, almost all Ethiopian coffee is organic by default, whether certified or not. The combination of natural growth methods and precise processing has made the region's coffee world-renowned. The Neko farm owner said: "We didn't have time to prepare this time, but we will prepare for RFA organic certification for the next harvest."

Washed-processed coffee requires more resources (water) than natural processing, resulting in higher quality washed green coffee beans. The coffee beans are spread evenly on drying tables for good ventilation, and to prevent over-fermentation, they are turned regularly.

Washed processing has a brighter acidity compared to natural processing, giving Yirgacheffe a "clean" taste. We like washed Yirgacheffe because it's clearer.

Production Area Information

FrontStreet Coffee Ethiopia Yirgacheffe Kochere

Grade Classification: G1

Variety: Heirloom

Growing Altitude: 1,650-1,800 meters

Processing Method: Washed

Flavor Profile:

Fruity (rich fruit flavor), Fresh Jasmine Aroma, Berries, Citric Acidic, Pineapple, Apple, Smooth, Clean, Long Aftertaste

We know that Ethiopian coffee is graded based on the defect rate of the beans. So what's the difference in appearance between beans of different grades? And will there be significant differences in flavor between beans of different grades?

FrontStreet Coffee today will share with everyone the differences between FrontStreet Coffee's washed Yirgacheffe G1 and FrontStreet Coffee's washed Yirgacheffe G2~

Grading

Let's first look at the specific Ethiopian coffee grading standards defined by EXC! ECX has established a grading system that combines physical characteristics with cupping flavor characteristics for scoring and grading.

ECX's specific grading and scoring standards are as follows:

A. Scoring Definition for Washed Processing

1. Physical characteristics account for 40%: defect count (20%), appearance size (10%), color (5%), aroma (5%)

2. Cupping quality accounts for 60%: cleanliness (15%), acidity (15%), mouthfeel (15%), flavor characteristics (15%)

B. Scoring Definition for Natural Processing

1. Physical characteristics account for 40%: defect count (30%), aroma (10%)

2. Cupping quality accounts for 60%: cleanliness (15%), acidity (15%), mouthfeel (15%), flavor characteristics (15%)

C. Overall Summary:

1. All coffees are first classified by processing method: natural, washed;

2. Each is graded into 9 levels G1-G9 based on physical characteristics and basic cupping quality scores;

3. G1-G3 are cupped again according to SCAA standards for more detailed evaluation of flavor attributes, with G1 and G2 scoring no less than 85 points graded as Q1;

4. G1, G2, G3 scoring between 80-85 are graded as Q2, while all G1, G2, G3 scoring below 80 are graded as G3;

5. Q1 and Q2 are classified as Specialty Grade for export. G4-G9 maintain their original grading and are classified as Commercial Grade for export together with G3.

Washed Grade 1 represents 0-3 defective beans per 300 grams of green beans; Grade 2 represents 4-12 defective beans per 300 grams.

Green Beans & Roasting

Both of these FrontStreet Coffee washed Yirgacheffe coffees are local heirloom varieties, which is why the beans appear to vary in size. However, after careful observation and comparison, we can find that FrontStreet Coffee's washed Yirgacheffe G1 green beans appear more uniform overall with a lower defect rate, while FrontStreet Coffee's washed Yirgacheffe G2 green beans show obvious unevenness in size and a higher defect rate.

FrontStreet Coffee Washed Yirgacheffe G1

Entry temperature 200°C, yellowing point at 5:20, first crack begins at 8:25 at 185.4°C, developed for 2 minutes after first crack, discharged at 193.5°C.

Agrton bean color value is 65.5 (upper image), Agrton pink value is 76.3 (lower image), Roast Delta value is 10.8.

FrontStreet Coffee Washed Yirgacheffe G2

Entry temperature 200°C, yellowing point at 5:35, first crack begins at 9:08 at 182.1°C, developed for 2 minutes after first crack, discharged at 195°C.

Agrton bean color value is 66.9 (upper image), Agrton pink value is 77.5 (lower image), Roast Delta value is 10.6.

Flavor Comparison

Cupping

FrontStreet Coffee Washed Yirgacheffe G1: Jasmine, ginger flower, lemon, pomelo, plum, Tieguanyin

FrontStreet Coffee Washed Yirgacheffe G2: Jasmine, lemon, citrus, tea sensation

Pour Over

Parameters: water temperature 91°C, grind size BG 5R (58% pass rate through China standard #20 sieve), powder-to-water ratio 1:15.

Method: segmented extraction. 35g water for 30-second bloom, small water flow quickly injected to 130g for segmentation, continue injection to 225g when water level drops and is about to expose the coffee bed, remove the filter cup when water level drops and is about to expose the coffee bed.

FrontStreet Coffee Washed Yirgacheffe G1: Smells of jasmine, lemon fragrance, and caramel sweetness. Entry has soft citrus acidity and cream aroma, mid-palate emerges with lemon acidity, sucrose aftertaste, oolong tea finish.

FrontStreet Coffee Washed Yirgacheffe G2: Smells of jasmine fragrance and citrus acidity. Entry has lemon, grapefruit acidity and black tea sensation, with some cocoa flavor in the finish, caramel aftertaste.

Conclusion

Comparing the two FrontStreet Coffee washed Yirgacheffes, both green and roasted beans clearly show that G1 beans are relatively more uniform in size, while G2 beans are obviously uneven with many defective beans; during the roasting process, G1's aroma is clearly perceptible, while G2's is somewhat inferior;

In terms of flavor, G1 and G2 are actually quite similar, mainly featuring lemon, citrus, and jasmine flavors. However, by comparison, G1 has richer and clearer flavor layers, while G2 has fewer and less clear flavor layers, with some off-flavors.

END

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