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…]

Kenyan coffee is world-renowned for its rigorous grading system and distinctive flavor characteristics. This article systematically reviews Kenya's coffee bean size grading system, including the specific standards for common grades such as AA, AB, and PB, while also introducing flavor grading methods like TOP and PLUS. Drawing on Front Street Coffee's roasting and brewing practices, and using Kenyan Asaliya coffee beans as an example, the article explains in detail the flavor performance of AA-grade beans and suggested pour-over parameters, providing coffee enthusiasts with a complete reference from bean selection to tasting. [more…]

Kenyan coffee is renowned for its bright fruit acidity and solid sweetness. Behind this highly recognizable flavor profile lies a strict grading system that has been in use for nearly a century. Since the 1930s, Kenya has established grade classifications based on coffee bean size, shape, and hardness, while also incorporating flavor grade assessments to provide a double safeguard for green bean quality. What exactly do common grades like AA, AB, and PB represent? What do AA+ and TOP AA mean respectively? This article systematically sorts out the grading logic of Kenyan coffee, the screen sizes corresponding to each grade, and uses Front Street Coffee's own roasted Kenyan Asaliya coffee beans as an example to share their origin background, processing method, and brewing suggestions, helping coffee enthusiasts more clearly understand the quality framework of Kenyan coffee. [more…]

Kenyan coffee is famous for its vibrant acidity and rich complexity, but many enthusiasts report that the acidity becomes too prominent after brewing. Drawing on their retail experience, Front Street Coffee shares a V60 brewing recipe suited to Kenyan beans with pronounced acidity, and takes a deep dive into Kenya's growing regions, the classic varieties SL28 and SL34, the unique K72 double-fermentation washed process, and the grading logic behind the AB grade. The article also details the origin information, green bean characteristics, and roasting curve of Front Street Kenya AB Komatina Cranberry, helping readers fully understand the source of this coffee's flavor and the key points of extraction. [more…]

Kenyan coffee is famous for its vivid fruity aroma, citrus notes, and juice-like acidity, and is a specialty representative in the minds of many coffee lovers. This article focuses on the price of Kenyan coffee, its regional background, and its green bean grading system, with emphasis on explaining the differences in bean size among grades such as AA, AB, and PB, as well as the impact of K72 washed processing on quality. At the same time, combined with the price and store information of Front Street Little Tomato, it provides specific brewing suggestions for light-to-medium roasted Kenyan beans, including coffee-to-water ratio, water temperature, grind size, and staged pouring plans, helping readers understand the flavor and value of Kenyan coffee more systematically. [more…]

Kenyan coffee occupies a unique place in the global specialty coffee landscape thanks to its bright fruit acidity and clean cup. This article begins with the Kenya AB Komatina Little Cranberry once offered by Front Street Coffee, and systematically walks through the geography and growing background of Kenya's producing regions, the lineage of the main cultivars SL28 and SL34, the specific meaning of grading standards such as AB and AA, and a detailed breakdown of the complete K72 double-fermentation washed process. The article also includes Front Street's roasting curve analysis for this bean and its in-store brewing parameters, helping you fully understand what gives Kenyan coffee its acidic, aromatic flavor and how to bring out its balanced, juicy side through brewing. [more…]

When purchasing single-origin coffee beans, labels such as G1, AA, and SHB often appear on the packaging. What exactly do these letters and numbers represent? They are actually coffee bean grade symbols established by each origin based on its own conditions. Due to differences in growing environments and varieties, the grading criteria of different countries vary—some look at the number of defective beans, some at green bean size, and others at hardness or altitude. In this article, Front Street Coffee will sort out the grading standards of major producing regions such as Ethiopia, Kenya, Indonesia, Central and South America, and Brazil, helping coffee lovers understand the meaning behind these grades so they can more accurately select high-quality coffee beans that suit their own taste. [more…]

When purchasing Kenyan coffee, you will often see bean names followed by letter designations such as AA or AB—what exactly do they mean? Why does Kenya place such emphasis on these grades? This article will systematically outline Kenya's green bean grading system based on bean size, explaining the specific classification criteria for each grade—AA, AB, C, PB, E, TT, T, and MH/ML—and pointing out the limitations of size-based grading: bean size is not the sole determinant of flavor quality, and growing altitude and environment are equally critical. It will also introduce the flavor characteristics of coffee from Kenyan producing regions, along with Front Street Coffee's recommendations for Kenyan coffee. [more…]

Kenyan coffee is renowned worldwide for its clean, refreshing, juice-like bright acidity. What exactly do the commonly seen designations in China such as "AA," "AB," and "AA TOP" represent? This article systematically sorts out the grading system for Kenyan coffee beans—from AA and AB to PB, E, C, TT, T, and MH/ML, the specific classification criteria for these eight grades—interprets the characteristics of major varieties such as SL28 and SL34, and analyzes the commercial logic behind exporters' secondary grading. At the same time, it focuses on the Thika producing region, introducing the origin background and flavor performance of Front Street Coffee Kenya Little Tomato, an AA-grade K72 washed bean, and includes the detailed parameters for high-concentration, high-extraction iced brewing along with the three-stage operation method. [more…]

Kenyan coffee is renowned for its vibrant berry notes, lively acidity, and substantial body, and its unique Kenyan-style washing process and green bean grading system based on bean size are equally noteworthy. What exactly do the commonly seen grades in China such as AA, AB, and PB mean? Is AA necessarily better tasting than AB? Front Street Coffee provides the answer through blind testing. This article will systematically outline Kenya's green bean grading standards and quality assessment procedures, and, in conjunction with Front Street's Little Tomato, an AA-grade washed bean from the Thika region, introduce the characteristics of the SL28 and SL34 varieties, the K72 washing method, and specific roasting and brewing plans, helping you gain a comprehensive understanding of the flavor code of Kenyan coffee and its application potential in espresso. [more…]

Kenyan coffee occupies an important position in the global specialty coffee scene thanks to its bright berry-like acidity, sugarcane-like sweetness, and juicy mouthfeel. Many consumers notice labels such as "AA," "AB," or "TOP" on coffee bags when making a purchase—but what exactly do these markings mean? This article systematically sorts out Kenya's coffee grading system, from the traditional size-based grading to the quality grading procedures established by the Kenya Coffee Research Institute, interpreting one by one the specific meanings and distinguishing criteria of grades such as AA, AB, PB, C, E, TT, and T, while also explaining the origins of secondary rating labels such as TOP, Plus, and FAQ and their cupping score ranges. In addition, the article uses Front Street Coffee's Kenya Asalia AA TOP as an example to provide detailed brewing parameters and flavor descriptions, helping coffee enthusiasts gain a more comprehensive understanding of the quality logic and tasting key points of Kenyan coffee. [more…]

In East African coffee-producing countries, coffee bean names from Tanzania, Uganda, and even Kenya often carry the suffix AA. What exactly does this letter combination mean? It represents the grade classification of green coffee beans. However, grading methods across global coffee origins are not limited to just one type; besides bean size, there are also different standards based on defect rate, growing altitude, and more. This article will take Front Street's perspective to systematically outline the three major green coffee bean grading systems, with a focus on analyzing Kenya's strict size-based grading system—from AA, AB to PB, E, TT, T, and even MH/ML, detailing the specific classification standards for each grade, while also pointing out the obvious limitations of judging quality by size. [more…]

Kenya, as a representative producing country of East African specialty coffee, is known for coffee beans with bright fruity acidity and a full body. This article systematically sorts out Kenya's coffee grading system, from E, AA, AB to PB, C, and other grades in terms of bean size and characteristics, and introduces the geographical advantages of major producing regions such as Nyeri and Thika. At the same time, it provides an in-depth analysis of the flavor differences among classic varieties such as SL28 and SL34, as well as Kenya's signature K72 double fermentation washing method. The article also includes the brewing parameters and flavor description of Front Street Cherry Tomato Coffee, providing coffee lovers with a complete reference from bean selection to extraction. [more…]

Kenyan coffee is famous for its bright, juicy acidity, and labels such as AA, AB, and AA TOP are common in China. How exactly are these grades divided? Is there a substantial difference between AA and AA TOP? This article will start with Kenya's official grading system, analyze the criteria for grades such as AA, AB, PB, and E, and explain the meanings of secondary grading terms such as TOP, Plus, and FAQ set by exporters themselves. It will also introduce the K72 washed coffee beans from the Asali Processing Plant in the Thika region, which use SL28 and SL34 varieties, are AA grade, and are light-roasted by Front Street Coffee to present flavors of cherry tomato and smoked plum. [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…]

Kenyan coffee is world-renowned for its bright acidity and rich fruity flavors, and AA and AB, as the two most common grades, what exactly is the difference between them? This article will start from the perspective of Front Street Coffee and systematically sort out Kenya's coffee grading system—including the specific classification criteria for eight grades such as AA, AB, PB, and E—and further explain the differences between green beans and roasted beans, as well as the factors affecting coffee bean prices. At the same time, we will also share the hot pour-over and iced pour-over practical parameters for Front Street Kenya Asalia and AA TOP, helping you better understand this high-quality coffee from the Thika producing region. [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…]

Kenyan coffee is famous for its clean and refreshing, solid and bright juice-like acidity, but what exactly do the commonly seen "AA," "AB," and even "AA TOP" in China represent? This article starts with Kenya's official coffee bean grading system, sorting out the size, shape, and quality differences among the eight grades AA, AB, PB, E, C, TT, T, and MH/ML, and explains that secondary grading labels such as TOP, Plus, and FAQ, which are independently set by exporters, are for reference only. It then focuses on the Thika producing region, introducing its geographical location, cultivation history, and variety structure mainly consisting of SL28 and SL34, and combines the cupping performance, light roast approach, and iced pour-over parameters of Front Street Coffee's Kenya Cherry AA-grade washed beans to present the cherry tomato, smoked plum, and snow pear-like acidity and honey sweetness of this producing region. [more…]

Previously, we talked about the coffee grading in Ethiopia. Today, let's take a look at what the coffee grading in Kenya is like! After all, when we see Kenyan coffee, we will see things like AA and AB. What exactly do these refer to? What is AA TOP? [more…]

Kenyan coffee stands out among Africa's specialty origins for its bright and delightful acidity, and the core that sustains its consistent quality is precisely the two signature varieties, SL28 and SL34. In this article, Front Street Coffee (FrontStreet Coffee) systematically sorts out the varietal origins of Kenyan coffee: from the selection process at the Scott Laboratories, to the genetic classification and bean appearance differences of SL28 and SL34, and on to the later Ruiru 11 and Batian. The article also provides a detailed interpretation of the green bean grading system that Kenya still uses today, explaining that the difference between AA and AB lies mainly in bean size rather than flavor quality, and includes complete information, roasting curves, and brewing suggestions for Front Street's two beans, Kenya Asaliya and Sachini PB, to help coffee enthusiasts fully understand the flavor logic of Kenyan coffee. [more…]