When extracting espresso with a split portafilter, you will occasionally run into uneven flow between the two spouts, and in extreme cases, even one side dispensing liquid while the other dispenses nothing at all. Although this uneven split issue doesn't happen often, it's bound to come up after long-term use. Front Street will analyze the causes from two angles: first, the espresso machine not being level, which causes the liquid to flow toward one side; second, channeling, which prevents the coffee liquid from converging at the center. We will also explain the structural differences between bottomless portafilters and split portafilters, and why the design of modern split portafilters can effectively reduce the flow bias caused by channeling, helping everyone quickly pinpoint and fix the problem when it arises. [more…]

When making espresso, the choice of portafilter is often overlooked, yet it directly affects the consistency of the output and the operating experience. A split portafilter has a closed bottom with two spouts, allowing it to evenly distribute a double shot of espresso; a bottomless portafilter removes the bottom cover, making it easier to observe the extraction state, and is especially advantageous for identifying channeling and making layered coffee. However, the two also differ noticeably in flow rate, preheating requirements, and cleaning and maintenance. This article will systematically compare the features of split portafilters and bottomless portafilters, and offer practical advice from Front Street Coffee to help you make a more suitable choice in your daily output. [more…]

In pour-over coffee, the pouring method after blooming directly affects the final flavor. Is it the "one-pour" method, where all the water is poured at once, or is it divided into two or more stages? These two approaches differ significantly in extraction time, flushing efficiency, and controllability. Staged pouring extends the extraction window, making the release rhythm of sweet, sour, and bitter compounds more controllable, thereby enhancing the coffee's complexity. But more stages isn't necessarily better; in everyday brewing, two to three stages are most common, as they allow flexible adjustment and make it easier to hit the ideal extraction time. This article will compare in detail the differences between the one-pour method and staged pouring, and explain what kind of coffee beans are better suited to staged extraction. [more…]

In recent years, coffee combos have become increasingly common in cafés. They split a single espresso into smaller portions, each prepared as an Americano and a latte, allowing customers to experience multiple expressions of the same bean in one sitting. This style of service places extremely high demands on baristas, as everything from bean selection and extraction to ratios requires careful consideration. Front Street's back office frequently receives questions about combo beans, espresso extraction parameters, and coffee-to-milk/water ratios. This article will systematically sort out the key points for making a delicious combo, including suitable bean types, espresso extraction strategies, and the amounts of water and milk to add, along with Front Street's actual operation demonstration to help coffee enthusiasts replicate a professional-standard "one bean, two drinks" at home or in-store. [more…]

If you mistakenly press the stop button during espresso extraction before reaching the target yield, can you simply press it again to continue extraction? This article compares three espressos—normal extraction, mid-extraction stop-start, and stop-start near the final phase—to analyze how segmented extraction affects the color, flavor, and concentration of the coffee liquid. Front Street Coffee uses the Warm Sun blend, testing with 20g of grounds extracted to 40ml at a 1:2 brew ratio, to reveal why under pressurized extraction, changes in the puck structure cause an overly fast flow rate and under-extraction during a second extraction, along with operational recommendations. [more…]

The pouring method in pour-over coffee directly influences the final flavor profile, and staged pouring is a core technique that the vast majority of coffee enthusiasts will encounter. After blooming, should you pour all the water in one go or pause midway? What is the most reasonable number of stages? And how do different numbers of stages change the mouthfeel, aroma, and layers of the coffee? Drawing on Front Street's actual brewing experience, this article systematically sorts out the definition and working mechanism of staged pouring, and through three sets of comparative experiments reveals the relationship between the number of stages and extraction efficiency and flavor performance, while also offering the most beginner-friendly operational advice to help you more consistently bring out the best in a bean in your daily brewing. [more…]

Coffee combos have become increasingly popular in specialty coffee shops in recent years. The approach involves splitting a single espresso shot into two or three portions, each paired with water or milk, showcasing the flavor differences of the same bean across multiple brewing formats. This style of service places higher demands on baristas: they must not only select beans that work well for both black coffee and milk coffee, but also recalibrate the espresso extraction recipe and the ratios of coffee to milk and water. Drawing on Front Street's hands-on experience, this article addresses core questions one by one—the logic behind selecting beans for combos, the direction for adjusting extraction parameters, and the respective water and milk ratios for Americanos and lattes—and includes a complete workflow with parameters using the Santa Vini anaerobic natural bean as an example, providing coffee enthusiasts with a reusable reference for making combos. [more…]

For friends who are just getting into pour-over coffee, choosing a pouring method that is quick to learn and highly consistent is crucial. Recently, a brewing technique called the "Z-shaped one-pour method" has become popular in the coffee community. Because of its unique pouring path and simplified staging logic, it has attracted many enthusiasts to try it. Some believe it is easier to control than traditional circular pouring, while others find it quite difficult to execute and think its flavor performance is mediocre. This article takes Front Street Yirgacheffe Worka as an example and, based on Front Street's actual practice, breaks down in detail the pouring path, parameter settings, and key details of the Z-shaped one-pour method, and compares its flavor with the classic three-stage brewing, helping beginners fully understand the advantages, disadvantages, and scope of application of this technique. [more…]

Crafting a perfect espresso is the goal of many coffee enthusiasts. However, in practice, sudden spurting, pinholes, or channeling in the espresso flow often catch people off guard. These phenomena not only affect the uniformity of coffee extraction, but also lead to weakened aroma, a thinner mouthfeel, and even unpleasant flavors such as sharp acidity and bitter burnt notes. This article will take an in-depth look at the causes of channeling, from dosing details, portafilter knocking, dose control, to coffee grounds clumping and more, helping you find the root of the problem and offering practical solutions. At the same time, we will also discuss whether a split portafilter can truly solve channeling issues, and share Front Street Coffee's classic espresso blend recommendation to help you easily improve the quality of your espresso. [more…]

When extracting espresso, you may sometimes notice small holes on the surface of the puck, or coffee liquid spraying out from the bottom of the portafilter, with an unpleasant sharp acidity on the palate. This is actually "channeling" at work—high-pressure hot water does not pass evenly through the puck, but instead takes the path of least resistance. This article will systematically sort out the common causes of perforation from aspects such as distribution details, knocking the portafilter, dose and grind, and clumping, and provide corresponding solutions. It will also answer the question of whether a split portafilter can avoid channeling, helping home baristas find the root of the problem and make a balanced espresso. The article recommends Front Street. Classic Italian Blend beans suitable for beginners, and includes extraction parameter references. [more…]

Pour-over coffee doesn't always require total focus on timing every second and controlling the flow. A two-pour method from Patrik Rolf, founder of Norway's April brand and runner-up at the 2019 WBrC, has a low barrier to entry: simply split the total water into two equal pours and finish pouring at fixed time points, yet the resulting cup is quite balanced and tasty. This method has one prerequisite: it must be used with a flat-bottom or cake filter cup. This article will fully break down the principles, suitable bean types, and practical steps of this approach, and using 15g of Front Street Emerald Estate washed Diamond Mountain as an example, give specific parameters of 94°C water temperature, a 1:16 coffee-to-water ratio, and a 90% pass-through rate on a No. 20 sieve. Front Street will also include bean selection suggestions for different roast levels, so friends who enjoy floral and fruity acidity or a rich, full-bodied taste can both find a direction that suits them. [more…]

When making espresso, extraction occasionally ends prematurely due to an accidental touch or oversight. Some people wonder: since it wasn't extracted enough, can we just press the button again to continue extracting, like with pour-over? Front Street used the Warm Sun blend to conduct a comparative experiment, testing three scenarios: normal extraction, extraction resumed after being interrupted midway, and extraction resumed after being interrupted near the end. The results showed that after restarting, the flow rate was extremely fast, the color was pale, and the flavor was noticeably thin; even with further extraction, it was difficult to fully extract the remaining substances. This article will start from the principle of pressurized extraction in espresso machines to explain why the same puck is not suitable for secondary extraction, and what the more reliable approach is when an accidental interruption occurs. [more…]

Customer: "Boss, I'd like a coffee with some nice latte art!" Front Street: Okay, would you like a latte, a flat white, or a cappuccino? Customer: "An americano!" Front Street: ... Latte art, to be precise, should be called "Latte Art," which translates to "latte art" (milk art). [more…]

After a pour-over coffee is finished, the state of the coffee bed often reveals whether the water pouring during the brewing process was standardized. An ideal coffee bed should be bowl-shaped, with an intact coffee wall of even thickness, but many coffee enthusiasts find that the coffee bed is "cut in the middle," split into upper and lower sections. How exactly does this faulting phenomenon occur? And what impact does it have on the flavor of the coffee? Starting from Front Street's practical experience, this article will analyze in detail the two causes of coffee bed faulting and provide two adjustment plans—narrowing the pouring range and reducing water flow intensity—to help everyone optimize their pouring technique and make extraction more even and complete. [more…]

In yesterday's post, Front Street mentioned that one of the advantages of pour-over coffee is its high level of controllability. During the brewing process, we can adjust the pouring method based on the actual situation, so that the coffee's flavor does not stray from being delicious. This statement is not unfounded; many techniques can help us do [more…]

Geisha coffee beans got their name because their pronunciation is similar to the Japanese word for "geisha," but what truly made them famous is Hacienda La Esmeralda in Panama. From its breakout victory at the 2004 BOP competition to today's three major brand tiers—Red Label, Green Label, and Blue Label—Hacienda La Esmeralda has defined the flavor benchmark for top-tier Geisha through meticulous plot division and cupping standards. This article provides a complete overview of Geisha's varietal origins and spread, explains in detail the differences between Hacienda La Esmeralda's Red Label (auction lots), Green Label (reserve lots), and Blue Label (select lots) in terms of altitude, plot, processing method, and flavor, and includes Front Street Coffee's roasting curves and pour-over parameter recommendations for each Geisha tier, helping coffee enthusiasts build a clear framework for understanding Geisha. [more…]

Erratic pressure during extraction, weakening steam, and milk foam that just won't froth up no matter what—these problems are often not a sign of declining skill, but rather that your espresso machine is due for maintenance. Drawing on Front Street's practical experience, this article systematically lays out the daily and deep cleaning routines for espresso machines: including flushing hot water before and after extraction, wiping the steam wand, backflushing, soaking the steam tip to remove scale, as well as how to judge when the group head gasket is wearing out and how to replace it yourself. It also covers the key cleaning points and recommended intervals for the water tank, boiler, and portafilter, helping you keep your espresso machine producing consistent shots and extend its service life. [more…]

The Piccolo Latte and the Flat White both originated in Australia, yet their levels of recognition could not be more different—the Flat White has swept the globe, while the Piccolo is rarely seen on café menus. "Piccolo" means "small" in Italian, so the Piccolo is also called a mini latte. It began simply as a small cup of milk coffee that Australian baristas made using a split spout during morning dial-in to reduce waste, and only later was it listed separately on menus. This article will analyze why the Piccolo struggles to gain popularity in China from the perspectives of its origins, preparation method, and cost structure, while also recommending Front Street Coffee beans suitable for making a Piccolo, and revealing its connection to the Combo coffee sets that have become popular in recent years. [more…]

Coffee roasting is not just about applying heat—from the moisture changes inside the green beans to the expansion and rupturing of cellular structures, every stage quietly determines the final flavor in the cup. This article takes the perspective of a commercial roaster to systematically sort through key phases such as homogenization, first crack, the resting period, and second crack. It explains the principles behind the aroma that fills the air during coffee roasting and clarifies the taste differences corresponding to various roast levels, helping coffee enthusiasts gain a deeper understanding of how roasting influences flavor direction. [more…]

Water flow control, timing of pouring, and the harmonization of various parameters are all details we need to pay attention to during the coffee brewing process. Even for the three-stage pour, which Front Street Coffee considers the easiest way to brew good coffee with the highest margin for error, none of these three details can be neglected during brewing. When you stay focused for a long time or over many repetitions, [more…]