Tanzania, one of Africa's Big Three coffee producers, has performed increasingly impressively in the global specialty coffee market in recent years. When buying Tanzanian coffee beans, what exactly do the "AA" and "AB" labels commonly seen on packaging mean? These letters are in fact grade codes for Tanzanian Arabica coffee beans, using a British imperial grading method similar to Kenya's, though the specific standards differ. Tanzanian authorities grade coffee by screen size, assuming that larger size means better quality, and classify beans into multiple grades such as AAA, AA, A, B, PB, C, E, F, AF, and TT. Among these, Grade AA requires mostly 17 to 18 mesh, while Grade AB is a mix of Grades A and B, and no such official grade actually exists. This article will explain in detail the specific mesh requirements and screening standards of each grade, helping coffee lovers decipher the grading code of Tanzanian coffee beans. [more…]

When two café owners ask each other about the grade of beans they use, what lies behind the question is a complex set of international coffee grading logic. Brazil's defect-score system, Central America's altitude standards, East Africa's screen sizes—each producing country has developed a completely different quality evaluation system based on its own national conditions. This article will systematically sort out three mainstream grading methods: by origin altitude, by green bean screen size, and by a composite evaluation method combining screen size and defective bean ratio, and will explain in detail Brazil's unique three-tier grading system and its strict cupper culture. Whether you are a newly initiated enthusiast or a seasoned professional, understanding these standards can help you judge coffee quality more accurately and also provide a reference for everyday purchasing. [more…]

The grading of green coffee beans not only affects trading prices but also, to a certain extent, reflects flavor tendencies. For this reason, each producing country establishes its own grading rules based on local conditions. This article focuses on Colombia's green bean grading system, with emphasis on explaining the meaning of the Excelso export grade, the defect scoring method, and the specific standards based on screen size classification, while also introducing the differences among the three common export grades: UGQ, EP, and Supremo. At the same time, Front Street Coffee will share the flavor characteristics and brewing suggestions for Supremo-grade coffee beans from Colombia's Huila region, helping coffee enthusiasts extend their knowledge of grading into the actual drinking experience. [more…]

When purchasing Colombian coffee, what exactly do Supremo and Excelso, commonly seen on burlap sacks, represent? What is the relationship between the two? This article will systematically sort out the grading system for Colombian green coffee, interpreting one by one the specific requirements of grades such as UGQ, EP, and Supremo, from defect rates and screen sizes to FNC export standards. It will also introduce derivative grades such as Extra, Premium, and Minama, as well as the use of Product of Colombia for coffee that does not meet export standards. The article also includes an actual naming example of Front Street Coffee's Huila daily drinking beans, helping readers understand the compositional logic and traceability methods of Colombian green coffee names. [more…]

The green coffee bean grading system directly affects roasting results and coffee quality. This article systematically sorts out two mainstream grading methods: distinguishing bean size by screen mesh number, and classifying grades based on growing altitude. It also summarizes the common grading standards and codes of origins such as Kenya, Ethiopia, Colombia, Brazil, Guatemala, El Salvador, Hawaii, Jamaica, and Indonesia. Whether for bulk trade or specialty coffee, understanding these grading rules helps to more accurately judge the characteristics of green beans, and Front Street Coffee also incorporates this knowledge into its daily bean selection and roasting practices. [more…]

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…]

Colombia, as one of the world's major coffee-producing countries, has a strict grading system for its exported green beans. What exactly do the commonly seen Supremo and Excelso labels on the market represent? This article will systematically explain the grading logic of Colombian green coffee beans from the perspectives of FNC export standards, defect rate requirements, and screen size grading, helping coffee enthusiasts understand the difference between Supremo and Excelso, and how they affect coffee quality and flavor performance. At the same time, the article will also mention Front Street Coffee's Colombia Huila daily beans as a practical naming example. [more…]

Colombia, as a major global producer of specialty coffee, has a strict and standardized green bean grading system. From the commonly seen Excelso marking on jute bags, to different grades such as UGQ, EP, and Supremo, to defect scoring and screen size sorting, every step affects the final quality of the coffee beans. This article will systematically outline Colombia's green coffee bean grading system, explain in detail the specific requirements and classification standards of the Excelso grade, and, combined with the brewing and flavor performance of Front Street Coffee's Huila daily drinker beans, guide you through a comprehensive understanding of the quality logic behind Colombian coffee. [more…]

The grading systems for coffee beans vary widely depending on the origin—some are based on the number of defects, others on bean size, and still others on altitude. Understanding these grade labels is an important step in selecting high-quality coffee. This article will systematically outline the green bean grading rules of major global producing regions, covering common designations such as Ethiopia's G1-G9, Kenya's AA and PB, Colombia's Supremo, and Hawaii's Extra Fancy, and explain how cupping scores further distinguish specialty grade from commercial grade. Whether you are a beginner enthusiast or a professional seeking to advance, this grading guide can help you judge coffee quality more clearly. For more professional content, follow Coffee Workshop; for specialty coffee beans, add Front Street Coffee on WeChat at qjcoffeex. [more…]

Colombia, with its exceptional geographical conditions and diverse climate, has become an important producer of high-quality Arabica coffee. Many coffee enthusiasts notice that Colombian coffee beans are generally larger than beans from producing regions such as Ethiopia, Costa Rica, and Brazil, and this is closely tied to Colombia's unique grading system. This article, from the perspective of Front Street Coffee, systematically introduces the standards by which Colombian green beans are graded according to screen size, including the specific specifications of common grades such as UGQ, EP, and Supremo, explains the meaning of the Excelso export grade, and introduces the key role of the FNC (Colombian Coffee Growers Federation) in the industry's development. Finally, it includes the brewing parameters and flavor description of Front Street's Huila everyday drinking beans, helping readers gain a comprehensive understanding of Colombian coffee from grading to tasting. [more…]

Different coffee-producing countries have developed their own unique quality grading systems due to their distinct cultivation histories and processing traditions. Some focus on defect ratios, some measure bean size, and others rely on cupping to make judgments. This article focuses on Colombia, outlining the Excelso export standard in its green bean grading system, the defect scoring rules, the screen size classification method, and the flavor profile of Supremo-grade Huila beans. It also includes the brewing parameters and taste description of Front Street Coffee's Huila everyday drinking beans, making it suitable for enthusiasts who want to systematically understand Colombian coffee. [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…]

Kenyan coffee is renowned for its bright acidity and complex flavors, and its grading system is equally worth understanding in depth. Kenyan coffee beans are roughly divided into eight grades—E, PB, AA, AB, C, TT, T, and MH/ML—based on bean size, weight, and shape and appearance, with Grade AA being the most common and outstanding in quality. This article will analyze in detail the specific classification criteria for each grade, including the 17/18 screen size of Grade AA, as well as cup quality classifications set by exporters such as TOP, PLUS, and FAQ. It will also introduce the Kenyan AA TOP-grade beans launched by Front Street Coffee, originating from the Thika region and processed using the K72 double washing fermentation method, presenting delicate acidity reminiscent of berries and red wine along with a creamy sweet aftertaste, making them a top choice for lovers of acidic coffee. [more…]

As an agricultural product, coffee beans vary significantly in quality, so a grading system is needed to standardize quality and provide reference for buyers. However, the geographical environments and cultivation models of global producing regions differ enormously, making it impossible to measure them with a unified standard; each region can only adapt to local conditions. Currently, mainstream grading methods fall into three major categories: screen size, altitude/hardness, and defect rate, and many countries combine them or even add cupping to compensate for shortcomings. This article will systematically sort out the logic and representative producing countries of these three grading methods, with a focus on analyzing how Kenya grades solely by bean size, and introduce the grading practices of Colombia, Ethiopia, Jamaica, Indonesia, Brazil, and other countries. Front Street Coffee will also share related brand product information to help coffee enthusiasts understand the meaning behind green bean grades. [more…]

Colombia's coffee grading system is more complex than that of most Central American producing countries. It is based not only on altitude, but also on a set of export standards built around defect rates and screen size. The Excelso grade adopted by the FNC is the highest export grade for Colombian green coffee. The burlap sacks are marked with "Excelso-Café de Colombia" and accompanied by a quality certificate. This article covers everything from the grading logic, screen size requirements, and defect deduction rules to the three most common export grades, and uses a washed Caturra from the Huila region as an example to explain green coffee traceability and cupping flavor performance, helping coffee enthusiasts understand the meaning behind Colombian green coffee labels. [more…]

Coffee enthusiasts often ask in the shop exactly what the difference is between Ethiopia's G1 and G2, what Kenya AA actually means, and what Costa Rica's SHB grade signifies. These combinations of letters and numbers actually reflect how each producing country evaluates the quality of green coffee beans. Due to differences in history, trade, climate, and terrain, different origins have developed their own grading systems, with evaluation criteria covering multiple dimensions such as defect percentage, bean size, growing altitude, green bean density, and processing method. This article will systematically sort out the origins of coffee grading and introduce, one by one, the green bean grade standards of representative producing countries such as Ethiopia, Kenya, Colombia, Jamaica, Costa Rica, Panama, Guatemala, El Salvador, Honduras, and Brazil. [more…]

Jamaican Blue Mountain coffee is globally recognized as one of the top coffees, but do you know how it is graded? This article will guide you through the basis for grading Blue Mountain coffee—screen size—and the strict cupping confirmation process. From No. 1 to No. 3, coffee beans of different screen sizes show no difference in taste, but there is a distinction between wooden barrels and burlap sacks for green bean packaging. Barrel-packed Blue Mountain coffee also comes with a certificate of origin, and the barrel is printed with information about the estate and importer. In addition, the Jamaican government has clear regulations on the export of defective beans and coffee beans with taste issues. Front Street Coffee reminds you that understanding this grading knowledge helps in identifying authentic Blue Mountain coffee. [more…]

Colombia, with its exceptional geographical and climatic conditions, has become a major producer of high-quality Arabica coffee worldwide. This article systematically reviews the grading standards for Colombian coffee beans, from UGQ and EP to Supremo, explaining the meaning of the Excelso export grade and its screen size specifications; it also delves into the diverse microclimates formed by the three major mountain ranges of the Andes, the varietal composition including Caturra and Geisha, the predominantly family-farm-based washed processing method, and the Huila specialty production region that has attracted much attention in recent years. Front Street Coffee uses a washed Huila everyday coffee as an example to share the classic sweet and mellow flavor under medium-dark roasting and a KONO dripper brewing method, taking you through a complete picture of Colombian coffee from origin to cup. [more…]

For coffee enthusiasts, Colombia is always an unavoidable classic origin. This article begins with the household-recognized brand image of Juan Valdez, systematically outlining Colombia's coffee-growing regions, climate characteristics, harvest seasons, and the landscape of specialty production areas, while offering an in-depth interpretation of why Huila Department has become the specialty region that Front Street Coffee selects as Colombia's flagship representative. The article also provides a detailed introduction to Colombia's green bean screen-size grading standards—the specific meanings of export grades such as UGQ, EP, and Supremo, along with their screen mesh specifications—as well as the practical application of the washed processing method in the Huila region. Finally, using Huila coffee beans as an example, Front Street fully demonstrates the extraction steps for a moka pot, offering a reference for daily brewing. [more…]

Coffee beans are grown widely across the globe, and the geographical conditions and cultivation methods of each producing region differ significantly, so it is impossible to measure all beans by the same standard. Different countries develop grading systems suited to their own local conditions. At present, the mainstream bases can be grouped into three categories: bean size, growing altitude (bean density/hardness), and defect ratio. However, these three are not mutually exclusive; many origins use multiple methods at once, and even after preliminary grading they supplement this with cupping to compensate for blind spots in the system. This article will break down these three major grading logics one by one and explain the actual meaning of common grade markers such as AA and G1, helping enthusiasts decipher the grade code on the packaging. [more…]