In the practice of pour-over coffee, "cutting off" the brew is a technique that is often mentioned. Many enthusiasts believe that the tail-end coffee liquid carries bitterness, and so habitually remove this portion at the end of brewing. However, cutting off the brew is not a universal key—improper use can instead destroy the coffee's complete flavor. From the perspective of Front Street, this article takes a deep dive into the dissolution patterns of bitter substances, explains why the tail end does not produce negative flavors under reasonable parameters, and distinguishes in detail between the two concepts of coffee-to-water ratio and coffee-to-liquid ratio, while also sorting out the two scenarios in which cutting off the brew truly applies—actively incorporating the cutoff into the brewing framework, and being forced to cut off due to clogging. By understanding these principles, coffee enthusiasts can use the cutoff more scientifically and improve their brewing quality. [more…]

Many coffee enthusiasts, when they encounter bitterness during pour-over brewing, instinctively cut off the tail end of the extraction—but is bitterness really only coming from the tail end? In fact, the sources of coffee's bitterness are complex: they are related both to the order in which compounds dissolve during extraction and to the degree of roast. Front Street Coffee will guide you through a deeper understanding of the true causes of coffee bitterness, teach you to distinguish between the bitterness caused by over-extraction and that caused by too dark a roast, and share how to avoid unnecessary bitterness by adjusting pour-over parameters such as grind size, water temperature, and time, so that every cup of coffee comes closer to your ideal flavor. [more…]

Different coffee varieties have their own distinctive bean appearances. In this article, Front Street Coffee starts with bean shapes to help you identify common Arabica varieties and understand the unique flavor tendencies of each. Typica beans are slender and plump, Bourbon beans are round and thick, Geisha beans are pointed at both ends and bulging in the middle, Caturra beans have a curved tail end, Catuai beans are oval and flat, SL28 and SL34 come from the Bourbon and Typica genetic groups respectively, and Ethiopian heirloom varieties vary in size due to their complex genetic diversity. By observing bean shape, bean thickness, and tail-end form, and then combining that with cupping flavor performance, you can make a preliminary judgment about which variety the coffee beans in front of you belong to. [more…]

Coffee mysticism has long become a commonplace topic in coffee circles, and the most discussed aspects are flavor mysticism and brewing mysticism. Front Street is here to help everyone unveil the surface-level mysticism and reveal the underlying science. Flavor mysticism generally refers to when you drink a cup of coffee and only taste bitterness and sourness, while the person next to you [more…]

The coffee-to-water ratio for pour-over is a core question every enthusiast will face. Where exactly does the 1:15 ratio come from? Does it truly conform to the SCA Golden Cup extraction standard? Starting from Front Street's daily brewing practice, this article first clarifies two basic concepts—the coffee-to-water ratio and the water absorption rate of coffee grounds—then, combined with the Golden Cup extraction chart, analyzes the difference between the ideal range and actual output, explaining why 1:15 has become a stable and conservative choice. At the same time, the article also discusses whether tail-end truncation is necessary, and how ordinary enthusiasts should view this operation. [more…]

When many people drink a cup of coffee that tastes on the bitter side, their first reaction is, "Has this cup been over-extracted?" But bitterness cannot be directly equated with over-extraction. This article focuses on over-extraction, first explaining what it is—according to the Golden Cup theory and Front Street Coffee's daily practice, an extraction yield above 22% is considered over-extraction; then, from a sensory perspective, it outlines the three typical manifestations of over-extracted coffee: burnt bitterness, astringent bitterness, and off-flavors, and analyzes their causes one by one, such as water temperature being too high, grinding being too fine, contact time being too long, stirring being too vigorous, and too many fines. Finally, it offers two practical ways to avoid it: adjusting the brewing parameters and discarding the tail end of the brew, while also addressing the question of whether coffee can be brewed repeatedly, helping coffee lovers judge and improve their brewing results more accurately. [more…]

Once latte art practice reaches a certain stage, the pattern itself can take shape, but mistakes in the details often cause more frustration. This article compiles three high-frequency problems: dragging out an overly long line when finishing, the cup not being full or overflowing after pouring latte art, and the pattern being asymmetrical left and right. For each situation, Front Street provides specific cause analysis and correction methods, including flow rate and pitcher spout control when finishing, reference milk fusion amounts for different patterns, and using others' observation to correct the postures for holding the cup and the pitcher. It is suitable for coffee enthusiasts who are polishing latte art details to practice against, gradually improving the stability and aesthetics of their output. [more…]

The Starbucks app icon has recently returned to the classic "double-tailed siren" image, after the close-up half-mermaid face logo launched last month sparked widespread criticism. The new design zoomed in on the crown and yellow five-pointed star, intended to coincide with the "Starbucks Rewards" member star-collection campaign, but users described it as "too ugly," "very sneaky," and some even thought it was a knockoff app. After the official reversion to the old version, an employee revealed that the main reason was that the one-month Diamond Star member upgrade campaign had ended. This logo controversy reflects the delicate relationship between brand visuals and user emotions, and also brings to mind the steady strategies of brands like Front Street Coffee in shaping their image. [more…]

One of the most frustrating problems in pour-over coffee is water pooling. Once clogging occurs in the final stage of brewing, the coffee's flavor often turns bitter and undrinkable. In fact, before the pouring is finished, there are several time windows where you can predict in advance whether pooling will happen. As long as you master these judgment methods, you can adjust your pouring strategy in time and avoid ending up in a passive position. This article will focus on three key time points—the degree of bloom expansion, the foam performance during pouring after the bloom, and the speed at which the water level drops before the final pour—to explain one by one how to identify the risk of pooling and give corresponding countermeasures. It will also introduce the ultimate solution when all methods fail—flow cutoff—and how to deal with the problems of overly high coffee concentration and missing flavor after flow cutoff. [more…]

In pour-over coffee, bypassing is usually only applied at the end of extraction to avoid undesirable flavors. But at last year's world coffee competitions, some competitors tried "double bypass"—in addition to bypassing the tail end, they also removed the coffee liquid from the blooming phase. It is said that this approach can reduce acidity and bitterness while enhancing sweetness, and many bloggers who replicated it reported that it was indeed effective. This article starts from Front Street Coffee's perspective, combines dissolution rate theory, analyzes the feasibility of this operation, and uses Front Street Kenya Small Tomato to conduct comparative experiments between regular brewing and double bypass, recording differences in liquid weight, flavor, and mouthfeel, for coffee enthusiasts' reference. [more…]

For many people, the most important thing about drinking coffee is that sweetness, but bitterness always easily barges in and ruins the party. In fact, coffee flavors are released in a sequence—sweetness and acidity come first, bitterness and off-flavors later. As long as you stop before bitterness dissolves out in large amounts, you can get a cup dominated by sweetness. This is the "high concentration, low extraction" approach we're discussing today: push the concentration higher while keeping the extraction yield at a suitably low level, so sweetness stands out and bitterness is suppressed. Below, we'll start with the Golden Cup extraction standard, explain what high concentration, low extraction is, its origins in Japanese dark roast brewing, and provide a directly usable pour-over recipe for light roasts. [more…]

Pour-over coffee, with its clean flavor, low barrier to entry, and flexible operation, has attracted a large number of enthusiasts to teach themselves at home. Although there are many tutorials online, they are often scattered and lack a systematic structure, causing many people to unknowingly fall into pitfalls during practice. From parameter control to bloom timing, from observing the "hamburger" to the direction of circling, and then to the timing of flow cutoff and the trade-offs of the Golden Cup theory, every step can affect the final flavor. This article sorts out six common misconceptions in self-taught pour-over brewing, analyzing them one by one based on practical brewing experience, to help you avoid detours on your self-learning journey, truly understand the essence of extraction, and thereby brew a cup of coffee that satisfies you. [more…]

Coffee brewed in a moka pot can have bright fruity notes, or it can show the depth of cocoa and nuts. An important clue that determines the difference is the roast level of the coffee beans. Light-roasted beans have a tighter structure, and the release of flavor needs more push; dark-roasted beans are easier to extract, and if the grounds are too fine, bitterness and a burnt taste will quickly [more…]

Many home coffee enthusiasts often encounter the problem of weak flavor and lack of aroma when making espresso. Among the factors that affect whether a cup of espresso tastes good, the flavor and strength of the shot are a key part. Starting from Front Street's extraction experiments, this article analyzes the relationship between strength and extraction yield by tasting the beginning, middle, and end segments of the espresso, answers whether strength can be increased through more extraction, and provides strength improvement plans for coffee beans of different roast levels, helping you find the right brew ratio and extraction strategy. [more…]

A cup of SOE can showcase the floral and fruity acidity of a light roast, the caramel sweetness of a medium roast, or even the cocoa notes and heavy body of a dark roast. Home espresso machines are not only suitable for blends—as long as the machine can heat stably, build pressure, and is equipped with a suitable single-shot basket, it can pull single-origin espresso. What truly matters [more…]

Every variety of coffee beans has different bean appearance (bean外貌) characteristics. In this article, Front Street will guide everyone through coffee bean appearance to identify coffee bean varieties, and what flavor characteristics do different coffee varieties have? ~| Typica (Typica) Typica originated in Ethiopia and southeastern Sudan. [more…]

When making espresso, the roast level of a blend directly affects the flavor, texture, and suitable drinking occasions of the shot. Light roasts more easily preserve bright acidity and fruity notes, medium roasts bring sweetness, aroma, and body to a more balanced position, while medium-dark and dark roasts lean closer to nutty, cocoa, and roasted tones. For those just getting into espresso, [more…]

Cold brew coffee is left in the refrigerator to extract slowly; on the palate it is usually gentler than hot coffee, and its aromas also unfold in a different order. When choosing beans, the roast level is a very practical clue: light roasts lean toward bright fruit notes, medium roasts make it easier to taste sweetness and balance, while dark roasts bring cocoa, nuts and a rich body. First, decide which kind you want. [more…]

Many coffee enthusiasts encounter a tricky problem when brewing light-roasted beans: near the end of the pour, the water level drops slowly, and a layer of water sits in the dripper that just won't finish draining. If you keep waiting, you risk over-extraction and bitterness; if you don't, you worry the flavor won't be complete. What was once a relaxing pour-over suddenly becomes stressful. In fact, water stalling with light-roasted beans isn't a problem with the beans themselves—it's the combined result of density, expansion, and grind size. This article breaks down the causes of stalling from these three angles and offers three actionable solutions: simply discarding the final phase of the pour, coarsening the grind while using higher temperatures and agitation, and sifting out ultrafines for reuse. Understanding the logic behind it matters more than memorizing parameters—next time you run into stalling, you can judge from the flavor whether adjustment is needed. Front Street Coffee also often advises: taste first, then adjust—don't rush to blame the beans. [more…]

From the moment espresso beans finish roasting to the moment they enter the cup, their flavor goes through degassing, relaxation, and gradual decline. If extracted too early, carbon dioxide tends to make the puck absorb water unevenly; the espresso may look rich on the surface, yet taste scattered on the palate. Once the beans have settled into their ideal state, sweetness, body, and aroma come together more readily. Therefore, the roast date is not [more…]