Saturday, October 10, 2026 Issue · Vol. 12 · No. 8
Today's Brew
Freshly curated stories
Nav: Home › Coffee› Introduction to Affordable and Delicious Yirgacheffe Coffee - Natural Process Dumerso G1 Green Bean Review and Flavor Description
Coffee

Introduction to Affordable and Delicious Yirgacheffe Coffee - Natural Process Dumerso G1 Green Bean Review and Flavor Description

Published: 2026-10-10 Author: FrontStreet Coffee Last Updated: 2026/10/10 103 reads

FrontStreet Coffee · Ethiopia Natural Yirgacheffe Dumerso Coop. G1

Ethiopia Natural Yirgacheffe Dumerso Coop. G1

Overview of Ethiopian Coffee Varieties

Ethiopia offers a great many coffee varieties, whether from ECX, YCFCU, or small-farmer lots introduced by green bean suppliers. Some disappointments and quality variations are inevitable. Such swings come with any agricultural product, which makes holding a consistent quality standard genuinely valuable. Especially as demand grows and production must rise with it - never mind improving quality - simply maintaining stable, reliable shipments is already a real achievement.

The Natural Process Dumerso Experience

Natural-process Dumerso is an item I buy every year, used mainly as the base for my light-roast espresso formula, with daily brewing as a secondary use. When I first tested it two years ago, the fermentation notes were slightly heavy, but the purple berry aroma, cherry fruit acidity, and chocolate-like texture were quite appealing. Especially after first crack ended, as the sweetness increased, it tasted a little like liquid Black Forest cake - very fragrant and delicious.

Green Bean Analysis and Roasting

According to the green bean seller, the flavor profile includes dried fruit, citrus tones, good sweetness, cleanliness, and balance, with a black tea finish, a smooth texture, and berry aroma. Honestly, that description doesn't sound much like a natural-process Yirgacheffe - perhaps it was copied from a washed-process description, or perhaps this year's fermentation degree changed. Either way, you don't know the flavor until you actually taste the coffee.

This time I roasted 500g, first setting aside 100g as a sample to estimate the defect ratio. The aroma was quite good, moisture control was even, and there was no uneven fermentation. I sorted out 3.9g of defective beans, mostly broken beans or incompletely shaped beans - overall quite acceptable.

Entry temperature was 170°C, with a weight of 478.4g and the turning point at about 58 seconds at 93.6°C. Because the beans were quite beautiful and the particle-size distribution wasn't too severe, they weren't difficult to roast. I dropped them at 208.5°C once first crack became dense. Total roast time was about 7 minutes and 50 seconds, and the weight after roasting was about 420g.

Tasting Notes and Evaluation

After resting for 24 hours, I tested it with 15g of ground coffee brewed with 210g of 92°C hot water. The dry aroma immediately revealed berries, cherries, and cocoa. On tasting, blackberry, chocolate, and black cherry emerged, with some brown sugar sweetness. The finish carried citrus acidity, very refreshing, without the heavy, sticky feeling of over-fermentation. It can fairly be described as a delicious and affordable bean.

Note: this year I had the chance to taste a washed-process Dumerso that a friend brought back from Japan. It had a clean, refreshing profile with a hint of bamboo-leaf freshness, pleasant sweetness, and quite good citrus notes in the finish. If you get the chance, it is worth trying too.

FrontStreet Coffee Recommendation

Natural-process Yirgacheffe is one of the best ways to get fragrant, sweet, fruit-driven coffee without paying a premium, and FrontStreet's lineup covers the style well. FrontStreet Natural Yirgacheffe Red Cherry is sun-dried from whole ripe red fruit, giving berry-juice body, honey sweetness, a creamy smoothness, and a wine-like fermentation note over the classic Yirgacheffe citrus - the kind of deep, layered natural this Dumerso represents.

For a cleaner, brighter everyday alternative, FrontStreet Washed Yirgacheffe shows white jasmine, bright citrus and lemon acidity, and a tea-like finish at an especially affordable price, and FrontStreet Gedingding Cooperative offers the G1 washed version of the region with elegant white florals, citrus, orange, and green tea.

Important Notice :

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou's FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。

FrontStreet Coffee has moved to a new address:

FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou

Tel:020 38364473

Scan & Share WeChat Scan and follow the En Gafei WeChat official account. Please indicate that the reprint comes from "En Gafei".
⇧
0