Have you ever wondered how the coffee you drink every day actually evolves from a tiny fruit? Although coffee is often likened to "juice," its production process is completely different from that of true fruit juice. This article will take you deep into the complete structure of the coffee fruit, analyzing the characteristics and roles of each part one by one, from the outer skin, pulp, and pectin layer to the parchment and silver skin. At the same time, we will also explore the geographical distribution of the Coffee Belt, the hardships of harvesting, and the processing and roasting process from green beans to roasted beans. Whether you are a coffee enthusiast just starting out or a seasoned taster, this article will unveil the mystery of the coffee fruit for you and give you a deeper understanding of the coffee in your cup. [more…]

Many people drink coffee every day, yet have never seen what a coffee fruit actually looks like. Coffee cherries resemble cherries, turning red when ripe, and their internal structure determines the final form of the coffee bean. This article uses anatomical diagrams to show in detail the exocarp, pectin layer, endocarp, silver skin, and seed of the coffee fruit, and traces the complete chain from harvesting, washing or drying, roasting, to extraction. It also introduces the distribution characteristics of the global coffee belt, as well as the basic differences among the three major native species: Arabica, Robusta, and Liberica. The article also recommends related products from Front Street Coffee, helping enthusiasts understand more intuitively the transformation of coffee from fruit to cup. [more…]

What exactly is the relationship between the coffee fruit and the coffee bean? A coffee cherry, from the outside in, consists of multiple parts including the exocarp, pulp, pectin layer, parchment, silver skin, bean core, and center line, with each layer playing a different role in coffee processing and flavor formation. The green coffee bean itself is composed of substances such as water, polysaccharides, lipids, proteins, sucrose, chlorogenic acid, other organic acids, amino acids, and caffeine, all of which directly affect coffee's mouthfeel, aroma, and the balance between bitterness and acidity. This article will dissect the structure of the coffee fruit layer by layer and systematically sort out the compositional substances of coffee beans, while also explaining the difference in caffeine content between Arabica and Robusta, helping coffee enthusiasts gain a more comprehensive understanding of the science behind the flavors in their cup. [more…]

As one of the most classic processing methods in the specialty coffee world, the core of the washed process lies in precisely removing the skin, pulp, and pectin layer from the coffee fruit through steps such as flotation, mechanical depulping, microbial fermentation, and washing with clean water. This process not only significantly reduces the defect rate of green beans and shortens the drying cycle, but also gives the coffee beans higher cleanliness and clearer expression of regional flavors. This article will systematically sort out the complete workflow and fermentation principles of the washed method, analyze its advantages and cost trade-offs compared with processing methods such as natural, and, in combination with the product lineup of Front Street Coffee's everyday drinking bean series, help readers understand why the washed process has become an important choice for presenting the true character of a producing region. [more…]

The ice drip pot has a unique shape, and its stacked layers often make people mistakenly think they have walked into a laboratory. Many customers who come to Front Street are curious about this set of equipment and want to replicate the store's signature ice drip at home. This article will systematically explain the structure and usage of the ice drip coffee pot, including key parameters such as grind size setting, coffee-to-water ratio, and valve flow rate control, and will share a production example using Costa Rica Mozart coffee beans from the Front Street store. In addition, the article also discusses the idea of choosing beans for ice drip coffee, offering specific coffee bean recommendations one by one according to four categories: tropical fruit fermented type, refreshing and clean type, sweet and mellow type, and flavor blend type, to help readers find the ice drip solution that best suits them. [more…]

The coffee flavor wheel can be considered one of the most valuable tools in the coffee field, and the SCAA has undertaken its first major update since its creation 21 years ago. This revision relied on deep collaboration between the World Coffee Research organization and the SCAA, bringing together the collective wisdom of sensory experts, researchers, coffee buyers, and roasters, becoming the largest and most participatory flavor wheel research project to date, and giving rise to a series of new terms in the industry and professional field. This article will guide you from the structure of the old flavor wheel, gradually analyzing the details of the changes in the new version, including the addition of a large number of fruit and plant flavor descriptors such as strawberry, blueberry, jasmine, and grapefruit, helping you fully understand this common language of the coffee world. [more…]

Every coffee cherry is like a miniature flavor factory, with six layers—from the outermost skin to the seed buried deep within—each playing its own role. It is precisely the existence of these layers and the differences in how they are removed that determine the flavor directions of different processing methods such as natural, washed, and honey. The coffee tree belongs to the Rubiaceae family as an evergreen shrub or small tree, and its fruit is called a coffee cherry in the industry because its shape closely resembles a cherry. This time, we will not discuss the legend of the shepherd, nor repeat the classification of the three major varieties; instead, we will focus on the internal structure of the coffee cherry, disassembling one by one the six layers—exocarp, pulp, mucilage layer, endocarp, silver skin, and endosperm—to see how they work together to give coffee its ever-changing flavor expression. [more…]

The annual global production of coffee beans reaches as high as 8.4 billion kilograms, and what influences the final flavor of a cup of coffee, besides variety, origin, and cultivation methods, is another crucial step—the processing method. Front Street Coffee believes that different processing methods lead to entirely different flavor directions. This article will provide an in-depth analysis of the complete process and characteristics of the washed processing method, starting from the anatomical structure of the coffee fruit, gradually breaking down each step of the washed method, and comparing the core differences with the natural method. At the same time, Front Street Coffee uses two washed beans, Kenya Asaliya and Yirgacheffe Gudingding, as examples, and through actual brewing experiments, demonstrates the flavor changes brought by different origins and varieties under the same processing method, helping coffee enthusiasts build a clearer framework for taste perception. [more…]

Coffee roasting is far more than just applying heat; it subjects green beans to a series of dramatic transformations on both the physical and chemical levels. As the first article in this series, this piece focuses on the physical changes during roasting: from the color shifting from blue-green to brown, to the moisture content plummeting from 10-12% to about 2.5%, to the cell walls going from rigid to rubbery, the beans expanding in volume, porosity increasing, and oils migrating to the surface. These structural changes do not occur in isolation; they provide the necessary preconditions for chemical processes such as the Maillard reaction and caramelization. Only by understanding the physical changes can one truly grasp the relationship between the roasting curve and the final flavor. [more…]

The flavor logic of light-roasted beans is "preservation": the roasting time is short, so the floral and fruity aromas and acidity of the origin are retained to a greater extent. When brewed properly, it is a bright and clean cup. The light-roast version of Front Street Coffee Yirgacheffe Gedingding has a clear citrus and green tea sweetness, and the acidity is a lively fruit acidity rather than a sharp, irritating sourness—the sweet-and-sour sensation of a light roast. [more…]

Looking at a coffee shop's bean list tells you a lot about how that shop thinks. Some shops have very long lists, packed with single origins, blends, and limited releases; others carry only one or two espresso beans year-round, yet make every cup solid. For most cafes, the core of a commercial espresso bean list isn't quantity—it's staying power—one [more…]

In the world of pour-over coffee, the shape of the dripper has a far more critical impact on flavor than one might imagine. The once-popular trapezoid dripper is now rarely seen in specialty coffee shops, having been replaced by cone-shaped drippers such as the Hario V60. This article starts from the actual brewing of two beans—Front Street washed Yirgacheffe and Jamaican Blue Mountain—to compare the flavor performance of the Kalita 101 trapezoid dripper and the V60 cone dripper, and takes a deep dive into how the structural differences between the two lead to different extraction methods. At the same time, the article also explores the reasons why the trapezoid dripper has gradually faded out, as well as its stability advantage that keeps it favored by chain brands, providing coffee enthusiasts with comprehensive reference for purchasing and brewing. [more…]

The coffee flavor wheel is an authoritative sensory tool recognized by the industry, but it cannot make you directly taste a certain flavor; rather, it is an auxiliary guide to help you organize and identify flavors. This article will use the new version of the flavor wheel released by the SCAA in 2016 as a blueprint, starting from its research background, and disassemble one by one the correspondence among the three-layer structure of the inner ring, middle ring, and outer ring. Combined with a comparative example of Front Street Yirgacheffe Gedingding and Front Street Boquete Geisha, it explains how to use the flavor wheel to gradually narrow the scope of judgment and build sensory memory. At the same time, it also reminds enthusiasts that they do not need to blindly follow the flavor wheel, because the samples it includes are limited, and real flavors such as lychee may not necessarily appear on the wheel. At the end, the article also shares the ingenious design between the flavor wheel's color scheme and flavor associations, helping you more efficiently improve your ability to identify the flavors of pour-over coffee. [more…]

Ice drip coffee is the most ceremonial member of the cold brew family. It relies on a dedicated ice drip tower, letting ice water pass slowly through the coffee bed at a rate of one drop every 1 to 2 seconds, taking several hours or even more than ten hours to complete extraction. Compared with iced Americano or cold brew, ice drip coffee has a cleaner, clearer mouthfeel, often with a bright fruity acidity and fermented wine-like aroma. Taking the Tiamo three-tier ice drip tower as an example, Front Street Coffee uses a 1:10 coffee-to-water ratio, extracting 600 ml of coffee liquid from 60 g of grounds, then refrigerating and resting it for more than 8 hours. This article will begin with the structure of the ice drip tower and its operating parameters, and its differences from cold brew, then analyze the reasons why ice drip coffee is priced relatively high, helping enthusiasts understand this slow, careful brewing method. [more…]

In addition to the V60, Hario has also released a uniquely shaped Pegasus dripper. It resembles a trapezoidal dripper in appearance, yet has undergone significant improvements in its flow guides, base structure, and cup holder design. The spiral flow guides deliver a drainage speed close to that of the V60, while the flat-bottom dual-hole design makes extraction more even. Viewed from above, the oval base looks just like a little boat, which is how it came to be called the boat-shaped dripper. Front Street Coffee conducted a comparative brew using this dripper and the V60 with the same Finca El Diviso Sidra coffee beans; the flavor profiles were similar, but the Pegasus dripper produced a softer acidity. This article provides a complete breakdown of its structural features, filter paper compatibility, the purpose of the measurement lines, and the conveniences and drawbacks encountered in actual brewing. [more…]

Many coffee enthusiasts encounter a puzzle when brewing anaerobically processed coffee beans: even when they follow the grind standard for a medium roast, the water flow is noticeably fast, and the resulting cup tastes thin and lacks complexity. Behind this phenomenon is actually a close relationship with the changes that anaerobic fermentation brings to the cellular structure of coffee beans. Starting from Front Street's actual brewing tests, this article combines grind particle-size distribution data from anaerobically processed beans such as Rose Valley and Mozart to analyze the causes of the faster flow rate, and offers adjustment suggestions on both grind setting and pouring technique, helping you reproduce at home an anaerobically processed coffee that is rich in aroma and smooth in mouthfeel. [more…]

The siphon pot, also known as the vacuum pot, often gives off a sense of mystery due to its unique, chemistry-apparatus-like shape and its retro appearances in film and television. As coffee lovers, understanding its structure, extraction principles, and method of use can help us better enjoy the rich flavors it brings. This article will analyze the structure of the siphon pot and its pressure-difference extraction mechanism in detail, share Front Street Coffee's hands-on steps, and recommend coffee beans suitable for the siphon pot, including classic medium-dark roasts and flavor-forward beans such as sun-dried Red Cherry, Mozart, and the Floral Order TOH washed champion, helping you explore the mellow world of siphon coffee. [more…]

Yunnan, as China's core coffee-producing region, has always been a topic of interest among coffee enthusiasts when it comes to the composition of its planted varieties. Currently, Yunnan coffee is not a single variety, but is mainly composed of three major categories: Typica, Bourbon, and Catimor. Among them, Catimor has become the main force due to its disease resistance and high yield, while Typica and Bourbon remain in localized areas such as Baoshan. Although these three varieties all belong to the Arabica species, they differ significantly in flavor, yield, and maintenance difficulty. This article will provide a detailed review of their origins, characteristics, and production area distribution, and explore the genetic connections between Yunnan small-bean coffee and famous varieties such as Blue Mountain and Kona. Front Street Coffee will also combine the current situation of the production area to interpret for you the flavor logic behind the varieties. [more…]

In coffee tasting, berry is a common and easily recognizable flavor descriptor, but it does not refer to a specific fruit; rather, it is a general term covering a variety of small, juicy fruits. In the new coffee flavor wheel released by the SCA in 2016, berries are classified as a separate category, including strawberry, blueberry, raspberry, blackberry, mulberry, cranberry, and blackcurrant. The common characteristics of these fruits lie in their flesh texture, thin-skin structure, and the even distribution of seeds within the berry. For coffee lovers who prefer berry-toned coffees, Front Street Coffee recommends prioritizing beans from producing regions such as Kenya, Rwanda, and Ethiopia, as they often present vivid red or dark berry flavors. This article will explain in detail the definition and classification of berry flavors, and recommend three Front Street Coffee single-origin coffees with prominent berry characteristics, helping you more precisely capture those captivating fruit aromas during pour-over brewing. [more…]

Coffee, as a daily beverage, has become deeply embedded in many people's lives. At the same time, for many, coffee is no longer just a way to get caffeine—the delightful flavors of its growing regions are also why people love coffee. Different regions produce different flavors: the citrus and floral notes of Yirgacheffe, the floral tea of Panama Geisha. [more…]