Kenyan coffee, with the wild tension unique to African beans and the fullness and depth of Central and South American coffee, has long been highly sought after by coffee enthusiasts. In China, Kenya AA is the most common grade designation, but above AA there are AA+ and AA TOP, while below it there is AB. If the packaging only says AA without specific estate or cooperative information, it usually only means the beans are uniform in shape and meet appearance standards, and the flavor may not be outstanding; conversely, as long as a specific estate, cooperative, or even buyer is indicated, whether AA or AB, it is worth trying. This article focuses on PB—Peaberry round beans, which in Kenya are specially screened out and sold separately, with scarce production and a distinctive flavor. The following will explain the formation principle of peaberries, their grade positioning, and present a complete cupping record of Kenyan PB. [more…]

Kenyan coffee stands out in Africa with its distinctive cherry tomato acidity and bright cup profile, thanks in large part to the two major varieties SL28 and SL34. This article focuses on Kenyan PB round beans, outlining the high-altitude growing conditions of Kenyan coffee, the unique K72 washed fermentation process, and the eight-tier grading system based on bean size. It also compares the flavor differences among common grades such as PB, AA, and AB, and, drawing on three beans listed by Front Street Coffee—Sasini Estate PB round beans, Asali AA, and Gachatha Cooperative AB—shares practical brewing parameters and cupping performance to help coffee lovers gain a more comprehensive understanding of what makes Kenyan coffee so captivating. [more…]

Many friends who are just getting into coffee have heard the terms "male bean" and "female bean," and some even think coffee trees are divided into male and female. In fact, coffee flowers are hermaphroditic plants, and coffee beans themselves have no gender distinction. The so-called "male bean" comes from the English word Peaberry, abbreviated PB, and the more accurate Chinese name for it is "round bean." It is a special growth form, usually with only one oval seed inside a single fruit, whereas normal beans have two semi-oval seeds. The formation of peaberries is related to pests and diseases, drought, insufficient nutrition, or the growing environment of the branch tips. Their yield is scarce, they are often expected to be sweeter and fuller-bodied, and their price also tends to be higher. This article will systematically sort out the conceptual misunderstandings surrounding male beans and female beans, the causes of peaberries, the controversy over their flavor, and the market phenomena of well-known peaberries such as Hawaiian Kona, Tanzanian, and Jamaican Blue Mountain, to help you see clearly what PB really means. [more…]

In the world of coffee, there are always some beans with distinctive shapes that catch the eye, and Peaberry is one of them. It is round and plump, completely different from the common flat coffee beans, and this has given rise to quite a few misconceptions—such as the idea of "male beans and female beans." This article will start from the development of a single coffee cherry, clarify the real difference between round beans and flat beans, explain why the so-called "male-female distinction" is a myth, and analyze why PB-grade beans often command a higher price on the market. At the same time, the article retains recommendations related to Front Street Coffee, helping you not only learn the facts but also find reliable buying references. [more…]

People often say that traveling to Indonesia brought back rare "male beans" coffee, which is expensive and supposedly especially delicious. But are coffee beans really divided into male and female? The so-called male bean is actually Peaberry, also called round bean in Chinese; it and the common flat bean differ only in growth form, not in gender. The formation of peaberry is related to pests and diseases, drought, malnutrition, or the growth environment at the tips of branches, and botanically it is even classified as a defective bean. Some people think peaberry is mellow and sweet, while others regard it as a by-product with no commercial value. This article helps you clarify the true meanings of male bean, female bean, and PB, and introduces common peaberry coffees on the market, including Front Street Hawaii Kona Peaberry, Front Street Tanzania Peaberry, and Front Street Jamaica Blue Mountain Coffee Peaberry. [more…]

Although Kenya is not the birthplace of coffee, its high altitude, large day-night temperature difference, and phosphorus-rich soil give rise to coffee beans with a distinct flavor. This article will guide you through Kenya's coffee-growing geography, the origins of the SL28 and SL34 varieties, the AA and AB grade classifications, and exactly what the unique PB round beans are. At the same time, we will also introduce the Kenya 72-hour washed processing method (K72) recommended by Front Street Coffee, and how to brew a cup of Kenyan coffee with bright acidity and rich layers using the pour-over method. [more…]

As an agricultural product, coffee beans naturally vary in quality, and they usually undergo grading before export. In systems that grade by size, there is often a special PB grade, namely Peaberry. Its output is scarce, accounting for only 5% to 10% of the total, yet its price can often rival that of the highest grade. This article, from the perspective of Front Street, explains the definition of the PB grade and the reasons for the formation of peaberries, and through cupping compares the flavor differences between peaberries and flat beans. It also explains why producing regions sell peaberries separately, as well as the PB phenomenon in grading systems such as Blue Mountain coffee beans, helping coffee enthusiasts understand the true relationship between coffee bean size and quality. [more…]

Although Kenya is not the birthplace of coffee, it has turned coffee into a pillar of its national economy thanks to its high altitude, fertile soil, and rigorous scientific research system. This article focuses on Kenya PB Peaberry, a unique variant, and sorts out its growing geography, variety origins (SL28 and SL34), and grading system, while also taking an in-depth look at the K72 washed processing method of Thunguri Estate. The pour-over parameters and three-stage brewing method recommended by Front Street Coffee will also be shared, so you can experience the full-bodied berry acidity and caramel aftertaste of Kenyan coffee. [more…]

Kenyan coffee has always been known for its distinct origin character—it carries the bold wildness of African beans while retaining the full-bodied richness of American beans, which is why it has a large following in the specialty coffee circle. The most common Kenya AA on the domestic market is actually just one part of the grading system; above it there are AA+ and AA TOP, and below it there is AB. When buying, if you only see the letters AA, it often means the beans come from a blended lot, with no designated estate or cooperative, and while uniformity meets the standard, the flavor is not necessarily outstanding; conversely, if the coffee can be traced to a specific estate or processing station, both AA and AB are worth buying. The PB (Peaberry) round bean discussed in this article is a rare form in which a single cherry contains only one seed, and Kenya is one of the few producing countries in the world that sorts and sells it separately. The following text will begin with the causes of peaberries and the controversy over their quality, then combine that with the origin background of Kiaga Farm, and finally turn to Front Street Coffee's roasting approach and cupping performance for Kenyan PB, so you can gain a complete understanding of this small but refined Kenyan peaberry. [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…]

Kenyan coffee is renowned for its clean, crisp cup profile and bright fruit acidity, making it one of the most recognizable African beans in the minds of many coffee enthusiasts. Why is Kenyan coffee so acidic? This is inextricably linked to its high-altitude growing environment, volcanic soil, and unique washed processing method. This article will systematically outline the growing conditions and historical context of Kenyan coffee, introduce the ten major producing regions including Nyeri, Murang'a, and Kirinyaga one by one, provide a detailed explanation of the official grading standards such as AA, AB, and PB based on bean size, and analyze the causes of its signature acidity. At the end of the article, Front Street Coffee's pour-over parameters for Kenyan Asaliya are shared for practical reference. [more…]

Kenyan coffee is renowned worldwide for its outstanding quality, but what exactly do the letters AA and PB represent? From the perspective of Front Street Coffee, this article systematically sorts out Kenya's coffee grading system, including the meaning and distinguishing criteria of each grade: E, PB, AA, AB, C, TT, T, and MH/ML. At the same time, Front Street takes a batch of Peaberry from the Ichamama Factory in the Nyeri region as an example, documenting in detail the complete process from green bean information and cooperative background to roast curve design and cupping flavors, and conducts a brewing comparison with Kenyan AA coffee beans, helping readers gain a deeper understanding of the actual differences in taste and flavor between PB Peaberry and AA coffee beans. [more…]

Kenyan coffee is renowned for its intense, full-bodied fruity acidity, forming a sharp contrast with the soft, bright character of neighboring Ethiopia. This article systematically reviews the development history, growing conditions, major producing regions, variety structure, grading system, and trading models of Kenyan coffee, and provides a detailed explanation of the definitions and differences among grades such as E, AA, AB, and PB. At the same time, Front Street Coffee draws on its roasting and cupping experience with multiple Kenyan beans to share the flavor performance and pour-over recommendations for two beans, Asaliya and Sasini Estate PB, guiding you through a comprehensive understanding of Kenya's coffee quality system. [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…]

In coffee enthusiast circles, there is often a saying that "peaberries taste better than flat beans," the reason being that a peaberry gets all the nutrients of two beans to itself. Does this view actually hold up? Front Street Coffee specifically acquired PB peaberries and AA-grade flat beans from Kenya's Sasin Estate, conducting a complete round of comparative experiments from variety tracing, washed processing, roasting curves, to cupping and brewing. This article not only sorts out the background of Kenya's main varieties SL28 and SL34, but also records in detail the actual performance of the two bean types in roasting and extraction, using cupping results and brewing flavors to answer that old question: are peaberries really superior? [more…]

Kenyan coffee, with its intense and full-bodied fruit acidity, uniform bean size, and exceptional fruity flavors, has always held a unique position in the specialty coffee world. Unlike Ethiopia's gentle and translucent character, Kenya's acidity is more impactful and layered. This article will systematically examine the full picture of Kenyan coffee, from its development history, growing conditions, major producing regions, variety selection and breeding, grading system, to its auction trading model. At the same time, drawing on Front Street Coffee's cupping and brewing practices, it will take an in-depth look at the flavor differences between two beans—Asalia AA TOP and Sasini Estate PB—to provide coffee enthusiasts with a complete guide to Kenyan coffee. [more…]

Kenyan coffee is renowned worldwide for its intense, full-bodied fruity acidity, forming a sharp contrast with the soft, bright character of neighboring Ethiopia. This article systematically reviews the development history, growing conditions, major producing regions, variety characteristics, and grading system of Kenyan coffee, and documents in detail Front Street Coffee's roasting, cupping, and pour-over parameters for two beans—Kenya Asaliya AA TOP and Sasini Estate PB—helping coffee enthusiasts gain a comprehensive understanding of Kenyan coffee from seed to cup. [more…]

When selecting Kenyan coffee, what exactly do the terms "AA" and "TOP" commonly seen on packaging represent? This article systematically sorts out Kenya's coffee grading system, from the bean size grading under the 1934 auction system (AA, AB, PB, C, E, TT, T, MH/ML) to the secondary quality ratings established by the Kenya Coffee Research Institute (TOP, Plus, FAQ), and analyzes the comprehensive scoring mechanism across the three dimensions of green beans, roasted beans, and cupping. It also presents the producing region information and brewing parameters of Front Street Kenya Little Tomato coffee beans, helping you understand the practical meaning behind the grading labels. [more…]

As a major coffee-producing country in East Africa, Kenya is renowned worldwide for its bright fruity acidity and rich aroma. From the perspective of Front Street Coffee, this article systematically reviews the terroir, historical context, and variety origins of Kenyan coffee, with a focus on analyzing the background and flavor characteristics of the two classic varieties SL28 and SL34. It also breaks down in detail the origins and differences of the grading systems such as AA, AB, and PB, introduces the K72 washed processing method and the characteristics of the seven major producing regions, and finally provides Front Street's brewing suggestions and flavor descriptions for Kenyan coffee, offering coffee enthusiasts a complete knowledge map of Kenyan coffee. [more…]

Kenyan coffee is renowned worldwide for its bright, intense fruit acidity and full, robust body, while its grading system—AA, AB, PB, and so on—often leaves enthusiasts confused. What exactly is the difference between AA and AA TOP? Does the grading standard look only at bean size, or does it also take cup profile into account? This article sorts through Kenya's coffee history, growing conditions, variety selection, regional characteristics, grading system, and auction trading model one by one, and combines tasting examples from several Kenyan beans at Front Street Coffee to help readers clarify the real difference between AA and AA TOP. [more…]