Colombian coffee occupies an important place in the world of specialty coffee, and its green bean grading system is based primarily on defect rates and bean screen size. When buying Colombian coffee, what exactly do the words "Supremo" and "Excelso" commonly seen on burlap sacks mean? This article will systematically sort out the grading rules for Colombian green coffee beans from multiple angles, including export standards, defect scoring, and screen-size classification, and explain the specific differences among the three grades UGQ, EP, and Supremo. At the same time, the article will also introduce common Colombian coffee bean brands on the market, including product information recommended by Front Street Coffee, to help coffee lovers more clearly understand the grade and quality of the bag of beans in their hands. [more…]

咖啡生豆的分级体系直接影响烘焙效果与咖啡品质。本文系统梳理了两种主流分级方式：以筛网号数区分豆粒大小，以及依据种植海拔划分等级。同时汇总了肯尼亚、埃塞俄比亚、哥伦比亚、巴西、危地马拉、萨尔瓦多、夏威夷、牙买加和印尼等产地的常见分级标准与代号。无论是大宗交易还是精品咖啡，了解这些分级规则都有助于更准确地判断生豆特性，前街咖啡也将这些知识融入日常选品与烘焙实践中。 [more…]

For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). Many friends, while drinking coffee at Front Street, ask our baristas, "What is Yirgacheffe G1 and Yirgacheffe G2?" "What is Kenya AA, AB?" What is Guate... [more…]

There are about 40 species in the Coffea genus, but only three native species—Arabica, Robusta, and Liberica—have real commercial value. They differ markedly in appearance, flavor, disease resistance, suitable altitude, and cultivation conditions: Arabica is elegant yet delicate, Robusta is hardy and intense, while Liberica is limited to localized trade in West Africa. Starting from botanical characteristics, this article systematically sorts out the origin distribution, climate and soil requirements, the complete cultivation process from sowing to harvesting, and the grading systems that producing countries have formed based on altitude, screen size, and defect bean ratios. Whether you are new to specialty coffee or want to understand the logic of origins more deeply, this foundational knowledge will help you more clearly judge the variety and terroir code behind the flavor in your cup. Front Street Coffee will also combine the key points in this article to recommend directions for your everyday purchases. [more…]

For professional coffee knowledge exchange and more coffee bean information, please follow Coffee Studio (WeChat official account: cafe_style). For more specialty coffee beans, please add our private WeChat: Front Street Coffee (FrontStreet Coffee), WeChat ID: qjcoffeex. With the rise of specialty coffee culture [more…]

The moka pot is a staple piece of equipment in many coffee lovers' homes, but if daily cleaning isn't done carefully enough, the aluminum body can easily oxidize and turn black, and the gasket and filter screen are often overlooked. This article explains in detail the key cleaning points for aluminum and stainless steel moka pots, walks through the steps for removing and cleaning the gasket and filter screen, their installation orientation, and replacement intervals, and offers repair solutions using white vinegar or lemon juice soaks for pots that have already oxidized. Mastering these methods not only keeps your coffee's flavor pure, but also effectively extends the moka pot's lifespan, letting it reliably brew every cup of coffee for you for years to come. [more…]

In making espresso, some seemingly unimportant details are often overlooked, yet they can gradually affect the taste of the coffee. Today, Front Street Coffee will talk about those details that are often forgotten—count how many you've missed. - Forgetting to flush water before attaching the portafilter. If there is a long interval between this espresso extraction and the last one, [more…]

For more specialty coffee knowledge, please follow our WeChat official account: FrontStreet Coffee. Sun-dried processed coffee beans are naturally dried inside the fruit pulp, so the weather conditions affect the quality of the coffee beans. Front Street uses sun-dried coffee beans and two other traditional processing [more…]

For enterprises engaged in coffee bean roasting production, obtaining a food production license is a prerequisite for lawful operation. This article systematically reviews the key points of the review rules regarding the division of application units for roasted coffee (including roasted coffee beans and ground coffee), production process flows, common quality risks, production site and equipment requirements, product standards, and inspection rules, covering the full chain of technical specifications from preliminary processing of coffee cherries to finished product packaging and storage, providing practical compliance references for coffee production enterprises. Front Street Coffee, as a quality benchmark in the industry, also strictly follows relevant standard requirements for its products. [more…]

Change the brewing device, and the same coffee beans will perform noticeably differently: pour-over emphasizes aroma and clarity, espresso machines emphasize intensity and sweetness, and the moka pot emphasizes the balance of pressure, heat, and the coffee bed. Only by factoring the brewing device into bean selection and then adjusting the parameters according to the roast level can you call the process complete. Dark roasts shift the flavor focus toward cocoa, dark [more…]

非洲与中南美洲是全球两大核心咖啡产区，但因地理环境、处理方式和品种差异，风味走向截然不同。中美洲产区如墨西哥、牙买加、巴西，多呈现坚果、焦糖与柔和酸质，口感均衡；而非洲豆通常带有鲜明花香与果酸。本文将逐一梳理中南美洲代表性产国的种植条件、庄园分级与风味特征，帮助咖啡爱好者理解两地豆子的本质区别。若想体验非洲豆的明亮果酸，前街咖啡的口粮豆系列是不错的选择。 [more…]

Blue Mountain coffee has been famous worldwide since the last century. Today, a brand called "Green Mountain Coffee" has come into the public eye. Many friends have asked Front Street, "Is Green Mountain Coffee riding on Blue Mountain Coffee's coattails?" "Is Green Mountain Coffee a counterfeit of Blue Mountain Coffee?" and similar questions. So Front Street decided [more…]

Coffee belongs to the Rubiaceae family, with over a hundred known species, but commercial cultivation is dominated by three major types: Arabica, Robusta, and Liberica. Among them, Arabica, with its outstanding aroma and flavor, accounts for over seventy percent of global production and is the core raw material for single-origin and specialty coffee. This article will systematically review the varietal characteristics, advantages and disadvantages, and sub-varieties of Arabica, and introduce one by one the cultivated varieties, processing methods, grading standards, and flavor profiles of representative producing countries such as Brazil, Colombia, Panama, Guatemala, Costa Rica, Jamaica, Ethiopia, Kenya, and Indonesia. It will also incorporate Front Street Coffee's sourcing experience and recommendations to help coffee enthusiasts build a complete framework for understanding origins. [more…]

When friends visit and are asked what coffee they'd like, many people reply, "I don't really know much about it—just make anything." This prompted us to come up with the idea of introducing the world's classic famous coffees. The first installment focuses on the representative of Brazil, the world's largest coffee-producing country—Brazil Santos Coffee. It comes from the state of São Paulo and is exported through the port of Santos, and with its No.2, 18-19 screen standard, it has become Brazil's highest-grade coffee. This article will analyze in detail its origin background, quality grading, flavor characteristics, and roasting suggestions, taking you through this classic choice that is mild and balanced, suitable for espresso and flavored coffee, and letting you feel its coffee charm that runs through Brazil's veins like samba. [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee) Kenya AA coffee has always been regarded as one of the best specialty coffees in the world. For some friends who are not very familiar with Kenyan coffee, Front Street is often asked what AA means. Besides [more…]

Blue Mountain Coffee is widely recognized as one of the world's top coffees, a status inseparable from its exceptional natural conditions and the Jamaican government's almost stringent industry regulation. The Blue Mountain range lies in eastern Jamaica, where the azure waters of the Caribbean Sea reflect off the peaks, giving the region its name. Its highest peak rises 2,256 meters above sea level, with a cool, foggy climate, abundant rainfall, and fertile volcanic soil providing an ideal growing environment for coffee. In the mid-20th century, due to inconsistent export quality, Canada once refused to accept Blue Mountain Coffee, prompting Jamaica to establish the Coffee Industry Board (CIB) in 1948, building a strict quality standard and certification system. Blue Mountain Coffee is classified by screen size into No.1 through No.3 and Peaberry grades. The government has also designated specific cultivation areas and processing plants, with dedicated supervision from harvesting, fermentation, and drying to barrel packaging. This article will systematically outline the classification, grade standards, and unique craftsmanship of Blue Mountain Coffee, offering you a comprehensive understanding of this legendary coffee. [more…]

坦桑尼亚咖啡虽不如邻国肯尼亚声名显赫，却凭借醇厚质感与柔和酸度赢得“咖啡绅士”之誉，乞力马扎罗产区更是精品非洲豆的代表。本文系统梳理坦桑尼亚咖啡的历史渊源与分级体系，详解AA、AB、PB、C各等级在颗粒大小上的具体划分标准，并以杯测与手冲经验为切入，呈现前街乞力马扎罗AA水洗豆从烘焙曲线确认到风味落地的完整品控过程，带您理解柑橘莓果调性与蜂蜜茶感回甘的成因，评估不同等级的价格定位与选购逻辑。 [more…]

Friends who frequently buy coffee beans will surely notice that most coffee bean names are followed by English suffixes such as AA and AB. This is especially true for Kenyan coffee beans—Kenya AA, Kenya AB, Kenya PB, Kenya AA+, Top, and so on. "So what do these suffixes mean? [more…]

乌干达地处尼罗河源头，是非洲内陆国，咖啡种植历史悠长，却因长期战乱而品质停滞。近十五年来，随着局势稳定，乌干达咖啡产业迎来快速发展。本文将带你深入了解乌干达咖啡的产区分布、品种结构、处理方式与分级制度，并剖析其醇厚果香、红酒般层次感以及独有的泥土气息等风味特点。前街咖啡（FrontStreet Coffee）与你一同探索这片赤道高原上的咖啡潜力。 [more…]

乌干达地处尼罗河源头，是东非内陆国家，咖啡种植历史源远流长。受长期战乱影响，其咖啡品质提升一度停滞，与肯尼亚接壤区域出产的优质豆甚至被转运冒充肯尼亚咖啡。战事平息十五年后，乌干达咖啡产业迎来快速发展。该国以罗布斯塔品种为绝对主力，占比约94%，阿拉比卡仅占6%，主要分布在埃尔贡山及西南部高海拔地带。前街咖啡带您了解乌干达咖啡的产区分布、处理方式、分级制度以及独特的风味表现，感受这个非洲产国在醇厚口感与果香层次上的别样魅力。 [more…]