In the coffee industry chain, silver skin is often overlooked as a roasting by-product. However, Japan's Ito En and Tully's Coffee have teamed up to transform this thin protective layer into water-resistant straws. Every 10 grams of coffee beans produces enough silver skin to make two straws, and it does not interfere with the flavor of the drink. In fact, Tully's Coffee had already launched eco-friendly napkins containing silver skin as early as 2012. Although these products are currently limited to some stores in Japan, silver skin-blended paper has already taken an eco-friendly step in reducing pulp usage. This article will guide you through the transformation of coffee silver skin from waste to practical accessories, and revisit coffee grounds recycling cases such as Starbucks' ground coffee straws, exploring the possibility of fully utilizing the entire coffee fruit. [more…]

Besides the bean inside the coffee cherry that can release thousands of aromatic compounds after roasting, the peeled fruit skin can actually also be brewed and drunk. In Europe and America it is called Cascara, while in China it is often called coffee cherry tea. This article begins with the tissue structure of the fruit skin, the materials removed during green bean processing, and the old uses of the skin as fertilizer or waste, then traces back to the story of Salvadoran estate owner Aida Batlle, who accidentally discovered its sweet aroma after sun-drying and tried brewing it, explaining that Cascara in Spanish simply means skin and husk. It then introduces the production process of the skin, from peeling, sun-drying, and manually removing impurities to 4–5 days of drying and color-change monitoring, analyzes the flavor characteristics of the skin tea, which is almost only sweet, and provides Front Street Coffee’s practical reference for hot brewing at 94°C water temperature, 20g of skin with 400ml of water, and a 1:20 ratio, as well as key points such as cold brew and specialty drinks, and caffeine being only one quarter that of coffee. [more…]

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…]

The flavor of coffee beans depends not only on variety and origin—the processing method also plays a key role. This article systematically walks through the complete washed processing method—from removing floating beans and separating the skin and pulp, to fermenting away the mucilage, rinsing with clean water, and drying and hulling—and takes an in-depth look at the advantages and disadvantages of the washed method in terms of quality, appearance, cost, and water usage. At the same time, Front Street Coffee uses two washed beans—Kenya Asaliya and Yirgacheffe Gutingding—as examples to compare the flavor differences brought by different origins, altitudes, and varieties under the same processing method, helping readers build a more well-rounded understanding of washed coffee. [more…]

Coffee cherries: besides the seeds that can be brewed, can the discarded peel also become a drink? In July of this year, at a Yunnan coffee flavor map event held in Shanghai, Nestlé showcased a new coffee species called "Cascara" in the Chinese market for the first time. This drink, made from coffee fruit peel, transforms what was originally considered waste—after drying and brewing—into a beverage with a flavor similar to tea. Nestlé also launched four Cascara specialty drinks, but they are still in the development and experimental stage, and the launch time and format have not yet been determined. Nestlé admits that the real challenge is not technology, but how to make consumers aware of and accept Cascara. This article will take you through the origins and flavor characteristics of coffee Cascara and Nestlé's layout strategy. [more…]

Are coffee beans actually the fruit of the coffee tree? Can they be roasted directly after picking? These questions puzzle many people who are just getting into coffee. In fact, coffee beans are the seeds of the coffee fruit, and they need to go through a series of green bean processing methods to reveal different flavors. Washed and natural, as two mainstream processing methods, show significant differences in workflow, drying time, appearance characteristics, and final cupping performance. Through extensive cupping, Front Street Coffee has found that washed coffee has bright acidity and high cleanliness, while natural coffee has more complex berry notes and higher sweetness. This article will systematically explain the principles and flavor characteristics of these two processing methods to help coffee lovers gain a deeper understanding of the decisive influence of processing methods on coffee flavor. [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…]

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 production of coffee beans reaches as high as 8.4 billion kilograms, and the processing method is one of the key stages that determines the direction of flavor. The washed processing method is known for its clean, bright, and prominently acidic qualities, and serves as the foundational flavor benchmark for many specialty coffee regions. From the perspective of Front Street Coffee, this article systematically sorts out the complete steps of the washed method—from removing floating beans, depulping and demucilaging, fermentation, washing, to drying and hulling—and analyzes its advantages, disadvantages, and the causes of its flavor. At the same time, it compares the differences between natural and honey processing, and uses two washed beans, Kenya Asalia and Yirgacheffe Gedingding, as examples to show the diverse expressions of the same processing method under different origins, varieties, and altitudes. [more…]

The washed processing method is one of the most common and most highly regarded processing methods in specialty coffee, known for its clean flavor, bright acidity, and uniform bean appearance. This article, from the perspective of Front Street Coffee, will systematically explain the structure of the coffee fruit, each step of the washed process, and the advantages, disadvantages, and flavor characteristics of washed beans. Through a comparative experiment between two washed beans—Kenya Asaliya and Yirgacheffe Gediding—it will demonstrate how the same processing method can present completely different flavor profiles under different origins, varieties, and altitude conditions. [more…]

Everyone's demand for coffee is growing stronger by the day, with global coffee bean production reaching as high as 8.4 billion kilograms annually—an astonishing output. When it comes to coffee, Front Street believes that beyond variety, origin, and cultivation methods, there is another important process that influences coffee flavor: coffee bean processing methods. Different processing methods for coffee beans [more…]

Yirgacheffe, as a representative region of Ethiopian specialty coffee, has become the top choice for many coffee enthusiasts stepping into the world of specialty pour-over with its bright acidity and clean, refreshing flavor. This high-altitude region located on the eastern edge of the East African Rift Valley—which groups of people is it really suitable for? And what completely different taste experiences do the two processing methods, natural and washed, bring? This article starts from Front Street Coffee's two representative beans, Natural Red Cherry and Washed Gudingding, to deeply analyze the green bean appearance, roasting curves, cupping performance, and brewing parameters, taking you through a comprehensive understanding of the correct way to drink Yirgacheffe and its flavor code. [more…]

Yirgacheffe, as an entry-level region for specialty coffee, features two distinct processing methods: washed and natural. Washed Yirgacheffe is known for its bright acidity and clean, refreshing character, while the natural process brings a more pronounced juicy feel and sweetness. Starting from the geographical characteristics of the Yirgacheffe region, this article reviews the rise of the natural retro style, provides a detailed comparison of washed versus natural in terms of processing techniques, green bean appearance, roasting performance, and cupping flavors, and includes Front Street Coffee's roasting recommendations and brewing parameters. Whether you prefer fresh acidity or rich fruity sweetness, you can find the right cup of Yirgacheffe for you. [more…]

Yirgacheffe, as the top choice for specialty coffee beginners, is known for its bright acidity and clean flavor. From the perspective of Front Street Coffee, this article systematically reviews the geography of the Yirgacheffe producing region, the principles of washed and natural processing methods, and compares the specific differences between two beans—Front Street washed Gedingding and natural Red Cherry—in terms of green bean appearance, roasting, cupping, and brewed flavor. The article also includes detailed roasting curves and V60 brewing parameters for both beans, making it suitable for coffee enthusiasts who want to gain a deeper understanding of the flavor formation and brewing performance of Yirgacheffe. [more…]

The structure of a coffee cherry, from the outside in, consists of the skin, pulp, mucilage layer, parchment layer, silver skin, and the coffee bean. The essence of a processing method is to remove these outer layers, retain the bean, and dry it. Honey processing falls between washed and natural processing, and is especially common in Costa Rica. Based on the proportion of mucilage retained, it is classified into different grades such as yellow honey, red honey, and black honey, with the more difficult raisin honey process also existing. This article breaks down in detail the complete honey processing workflow, the grade classifications, and the differences in drying, and includes recommendations for representative Costa Rican beans from the Front Street brand, helping coffee enthusiasts fully understand the flavor code of honey processing. [more…]

Yirgacheffe is the go-to starting point for many coffee enthusiasts, and the natural process gives it a completely different flavor direction. Starting from Front Street Coffee's natural Yirgacheffe, this article sorts through the drying process and flavor characteristics of the natural method, and compares it with the washed version, helping readers understand natural beans' fermented wine-like aroma, honeyed sweetness, and full body. The article also discusses the effect of silver skin on astringency, the correct understanding of coffee's acidity, and the significance of body and sweetness in tasting, finally offering advice on learning to taste starting with single-origin coffee. [more…]

Yirgacheffe is a coffee region that everyone is surely familiar with. Its bright acidity and clean, refreshing coffee flavor have made it the first specialty pour-over coffee bean for many people. In recent years, Yirgacheffe has sparked a revival of the natural (sun-dried) style. In many people's memories, Yirgacheffe has always been washed [more…]

Following our previous discussion of the two major processing methods—natural and washed—this time we turn our attention to several post-harvest processes that fall between them: wet-hulled, semi-washed, pulped natural, and honey processing. How is each of these methods carried out? And what impact do they have on coffee flavor? We'll still start with the structure of the coffee cherry: from the outside in, the fruit consists of the outer skin, pulp, mucilage, parchment layer, silver skin, and the coffee bean seed itself. The core goal of all processing methods is simply to remove the outer layers and extract the seed. However, differences in the method, timing, and degree of removal lead to vastly different results in the cup. This article will break down these processing methods one by one—their procedural details, flavor tendencies, and the subtle connections between them—to help coffee enthusiasts more clearly understand the key role processing plays in shaping flavor. [more…]

Among coffee bean processing methods, natural and washed are the most common, and the two differ significantly in green bean appearance, roasting performance, silver skin shedding, and final cupping flavor. Through long-term cupping, Front Street Coffee has found that washed beans highlight the bean's intrinsic flavor, with bright and clean acidity; natural beans, because the fruit pulp participates in drying, have richer aroma, enhanced sweetness and body, and more complex flavor. This article compares two Panama Butterfly beans, one natural and one washed, one by one from processing flow, advantages and disadvantages, roasting details to actual brewing parameters, helping coffee enthusiasts understand the flavor changes brought by different processing methods and make choices based on personal preference. [more…]

Yirgacheffe is the top choice for countless pour-over enthusiasts just getting started, its bright, clean acidity standing in stark contrast to traditional coffee. But when faced with the two processing methods—washed and natural—how exactly should one choose? This article starts from two representative beans from Front Street Coffee—Natural Red Cherry and Washed Gutingding—and systematically sorts through Yirgacheffe's growing region background, the process differences between washed and natural, the appearance characteristics of green and roasted beans, and then moves on to roasting curves, cupping performance, and brewing suggestions, helping you understand the flavor directions brought by different processing methods and find the Yirgacheffe that best suits your own taste. [more…]