Kenya AA is often regarded as the representative of African specialty coffee, but besides AA, the letters PB also appear frequently on Kenyan coffee labels. PB stands for Peaberry, a rare form in which a coffee cherry contains only a single seed, accounting for about 5% of Kenyan coffee. This article will systematically sort out the grading standards for Kenyan coffee, from E-grade Elephant Beans to AA, AB, C, TT, T, and even MH/ML, explaining the basis for each classification and the differences in specifications one by one. At the same time, combined with a Nyeri Ichamama Pearl Peaberry purchased by Front Street Coffee, it will provide an in-depth introduction to its producing region background, processing method, and roasting approach, and through a cupping comparison with Kenya AA, present the mellow and soft flavor characteristics of Peaberry along with brewing suggestions. [more…]

Kenya AA coffee occupies a pivotal position in the global specialty coffee landscape, yet the letter grades surrounding it are often confusing. What exactly do these codes—E, PB, AA, AB, C, TT, T, MH/ML—mean? From the perspective of Front Street Coffee, this article systematically sorts out Kenya's grading system based on raw bean screen size, and takes an in-depth look at a Peaberry from the Ichamama Factory in the Nyeri region, presenting the unique charm of Kenyan PB in full through raw bean information, cooperative background, four-roast comparison experiments, and cupping performance. At the end, it also includes Front Street Kenya Small Tomato AA's brewing parameters and flavor description, offering readers an intuitive AA vs. PB reference. [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…]

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…]

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…]

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 has always been known for its bright fruit acidity and rich mouthfeel, but there are also plenty of questions surrounding it: What exactly do AA and PB stand for? What is the story behind SL28? Starting from Front Street Coffee's store experience, this article systematically sorts out Kenya's coffee grading system, explains in detail the origin and characteristics of PB peaberry, introduces the historical background and flavor performance of the SL28 variety, and uses two beans—Sasini Estate PB and Front Street Azalea—as examples to provide complete V60 brewing parameters and tasting notes, helping coffee lovers fully understand the unique charm of Kenyan coffee. [more…]

Kenya AA coffee is often hailed as one of the world's top specialty coffees, but what exactly do the letters AA and PB stand for? This article systematically breaks down the grading system for Kenyan green coffee beans, including the meaning and specifications of each grade—E, PB, AA, AB, C, TT, T, and MH/ML—and takes a deep dive into the flavor differences between AA and PB peaberry beans. Drawing on years of roasting experience, Front Street Coffee uses an Ichamama Peaberry as an example to share its roasting approach and cupping performance, while also offering brewing parameter recommendations for Kenya AA, helping coffee lovers gain a comprehensive understanding of what to look for when buying and tasting Kenyan coffee. [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…]

Kenya AA is often hailed as one of the finest specialty coffees in the world, yet many coffee enthusiasts still have questions about what the letters AA, PB, and others actually mean. From the perspective of Front Street Coffee, this article systematically reviews Kenya's green bean grading system, explaining the definitions and origins of the E, PB, AA, AB, C, TT, T, and MH/ML grades, and takes an in-depth look at a Kenyan PB peaberry from the Ichamama processing factory in the Nyeri region, covering origin information, cooperative background, roasting experiments, and cupping performance. It then presents the flavor differences between the two through a brewing comparison with Kenya AA, helping readers gain a more comprehensive understanding of Kenyan coffee's grades and flavor characteristics. [more…]

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…]

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…]

Located in the St. Thomas region of Jamaica, Sherwood Estate has focused on Blue Mountain coffee production since 1797. Its output accounts for only 2% of the total Blue Mountain coffee harvest, yet thanks to hand-processing and strict quality control, it is regarded as one of Jamaica's finest Blue Mountain coffees. This article will guide you through Sherwood Estate's growing environment and processing methods, and take a deep dive into the flavor characteristics of its Blue Mountain Peaberry—from apple and lemon to jasmine and rose aromas, and on to the balanced expression of soft fruit acidity and a sweet finish. If you are curious about the taste of Blue Mountain PB, this detailed introduction from Front Street Coffee is not to be missed. [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…]

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…]

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…]

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…]

Although Papua New Guinea is not a major coffee-producing country, it has secured a place in Oceania's specialty coffee scene thanks to its washed Arabica beans. The Kimel Estate, located in the Wiki Valley of the Western Highlands, is jointly owned by smallholder farmers of the Opais ethnic group, who cultivate diverse varieties such as Typica, Arusha, and Blue Mountain, producing coffee that combines bright fruit acidity with a rich, full-bodied mouthfeel. This article focuses on the Kimel Estate PB peaberry beans sourced by Front Street Coffee, outlining their origin terroir, cultivation history, variety composition, and washed processing method, along with pour-over brewing parameters and flavor descriptions, to give you a complete understanding of this unique bean with high body, medium acidity, and notes of nuts, sugarcane, and spice. [more…]

Blue Mountain coffee is hailed as the finest of coffees, yet the "Blue Mountain style" products on the market are far removed from authentic Jamaican Blue Mountain. This article systematically sorts out the coffee grading system of Jamaica's Blue Mountain region, covering the three major categories—Blue Mountain Coffee, High Mountain Coffee, and Jamaican Coffee—as well as the sub-classifications of NO.1, NO.2, NO.3, and PB. It also shares identification tips provided by Front Street Coffee—genuine Blue Mountain coffee comes in wooden barrel packaging and is accompanied by a Jamaican government certificate. The article further documents in detail the complete brewing parameters and flavor profile of Front Street's brewing of Clifton Mount Estate Blue Mountain coffee, helping enthusiasts build an accurate understanding of authentic Blue Mountain coffee. [more…]

Tanzania is an important coffee-producing country in East Africa, and its coffee is known for its soft acidity, raisin-like sweetness, and red wine notes. This article begins with the blend sources of Front Street Tanzania coffee, sorts out the flavor differences among producing regions such as Kilimanjaro in the north and Ruvuma in the south, and introduces the history of the introduction of Bourbon and Kent varieties, the washed processing method, and the causes and grading of peaberry (PB). It also reviews the history of the country's coffee industry, which has experienced ups and downs due to political conditions and pests and diseases, as well as the shift from estate dominance to the rise of smallholder cooperative organizations. The article also includes specific product information and tasting notes for Front Street Kilimanjaro Peaberry, making it suitable for coffee lovers to gain a comprehensive understanding of the unique characteristics of Tanzanian coffee. [more…]