The flavor presentation of a cup of coffee depends largely on the choice of extraction method. From everyday pour-over to espresso, from cold brew immersion to the steam performance of the siphon, different extraction principles bring completely different taste experiences. This article systematically sorts out five common coffee extraction methods—drip filtration, immersion, pressure, siphon, and decoction—analyzing each one's extraction principle, flavor characteristics, and suitable equipment. Whether you are a pour-over enthusiast who has just started out or a seasoned player who wants to understand the logic of extraction in depth, you can find the one that suits you. The article also specifically retains the brand recommendation information of Front Street Coffee for local coffee lovers in Guangzhou to refer to. [more…]

Extraction is the core stage that determines the flavor expression of a cup of coffee. Whether it is pour-over drip, espresso, or any other brewing method, it is closely tied to the principles of extraction. This article systematically sorts through six common coffee extraction methods—immersion, decoction, percolation, pour-over drip, vacuum filtration, and pressurized extraction—and focuses on analyzing the extraction process, key parameters, and operational details of pour-over coffee and Espresso. At the same time, the article also introduces key points for choosing espresso grinders and coffee machines, as well as practical concepts such as Crema and golden extraction. Whether you are a beginner just getting into coffee or an enthusiast hoping to refine your brewing skills, you will find something worth referencing here. Front Street Coffee also provides related product and brand recommendations in the article for readers to consult when making purchases. [more…]

Coffee processing encompasses three levels: the processing methods that extract coffee beans from coffee cherries, the brewing methods that extract coffee liquid from coffee beans, and the industrial processes that turn coffee liquid into instant coffee powder. Traditional processing methods include three types—washed, natural, and honey—each giving coffee beans a distinctly different flavor profile. Extraction methods fall into three mainstream categories: drip, pressure, and cold brew, corresponding to pour-over coffee, espresso, and cold brew coffee, respectively. As for instant coffee, regular instant and freeze-dried coffee also show clear differences in production techniques and flavor retention. This article will break down these processing stages one by one to help coffee enthusiasts build a complete knowledge framework from seed to cup. [more…]

Siphon coffee and pour-over coffee are both classic methods for brewing single-origin coffee, yet they deliver strikingly different results in body and flavor. Pour-over is known for its clean, bright, and well-layered cup, while the siphon excels in rich, full-bodied depth and intense aroma. The root of this difference lies in the combined effect of the extraction method and the filtration system: the siphon uses a constant-temperature immersion extraction, combined with a flannel cloth filter that retains oils and fine particles, resulting in a heavier, more substantial brew; pour-over, on the other hand, relies on a drip method with a continuous supply of fresh hot water and uses high-density paper filters to trap impurities, producing an exceptionally clean cup. This article will analyze in depth, from the two dimensions of extraction principle and filtration method, why these two brewing methods bring such different taste experiences, and will include Front Street Coffee's bean selection recommendations to help coffee enthusiasts better understand and choose the brewing method that suits them. [more…]

Brewing a cup of coffee that's sharply sour, weak, and thin-bodied—it's a shame to pour it down the drain, but drinking it is torture. This time, Front Street Coffee won't talk about parameter adjustments, but instead share a practical idea for rescuing a coffee that's already gone wrong: pour the coffee back and re-extract it, boosting the extraction yield to make up for the flavor and strength. The article will address both drip and immersion brewing methods separately, explaining the specific steps, the conditions under which this works, and the cases where it doesn't apply, such as iced brewing and pressure extraction, to help you salvage an under-extracted coffee as much as possible. [more…]

Osmanthus has a rich, intense aroma. When added to coffee grounds and extracted together, can this floral fragrance be infused into espresso? Front Street conducted three sets of comparative experiments, placing dried osmanthus on the surface of the puck, at the bottom, and mixed with the coffee grounds, to observe extraction stability and flavor performance. The experiments found that the density of osmanthus differs greatly from that of coffee grounds, and both the amount used and its position affect the extraction results. For 20g of coffee grounds, it is recommended to add 0.3-0.5g of dried osmanthus; too much will instead破坏 the structure of the puck. The three methods each have their own characteristics: the surface method offers stable extraction, the bottom method gives a pronounced osmanthus aroma, and the mixing method easily produces channeling. Which method is ultimately best for making an osmanthus latte? Let's look at the experimental results together. [more…]

Caffeine content is influenced by multiple factors such as bean variety, steeping time, grind size, brewing method, and water temperature, among which extraction time is particularly critical—drip coffee typically has higher caffeine than espresso. If you want to reduce your caffeine intake, directly purchasing decaf beans is more effective than avoiding espresso. Decaf beans must undergo special processes before roasting to remove 96% to 98% of the caffeine, and these treatments inevitably alter the beans' physical and chemical properties, thereby affecting flavor. Currently, the mainstream methods include three types: the methylene chloride solvent extraction method, the Swiss Water Process, and the carbon dioxide extraction method. This article will break down the principles, advantages, and disadvantages of each process one by one, and compare the two decaf options used by Starbucks, helping coffee enthusiasts understand the technical logic and flavor trade-offs behind decaf coffee. [more…]

In the world of pour-over coffee, the choice of pouring method often determines the final flavor direction. Although brewing techniques emerge endlessly, multi-pour pouring has always remained mainstream—whether in professional competitions, café offerings, or enthusiasts' daily practice, its presence can be seen everywhere. Many friends who are just getting into pour-over ask Front Street Coffee: why do we always have to divide the water into several pours? Behind this actually involves two key factors: the improvement of extraction efficiency and the controllability of the brewing process. This article will unfold around the differences between single-pour and three-stage pouring and other staged pouring methods, analyzing the advantages of multi-pour pouring from the perspectives of extraction time and concentration differences, while also answering why immersion extraction has a higher fault tolerance rate, helping everyone understand the essence of the pouring logic in pour-over coffee. [more…]

Extraction is the core step that determines the success or failure of a cup of coffee's flavor. Whether it's pour-over drip, espresso, or French press, different equipment corresponds to截然不同的 extraction modes. This article will systematically sort out six mainstream coffee extraction methods—immersion, decoction, percolation, pour-over drip, vacuum filtration, and pressurized extraction—and deeply break down the operational details of pour-over and espresso. From the principles of dissolution and diffusion after coffee beans are ground, to Espresso's extraction pressure, time, and water temperature parameters, and then to the formation of Crema and the golden extraction standard, it helps you understand how each variable affects the final flavor. At the same time, combined with the practical experience of Front Street Coffee, it provides coffee enthusiasts with actionable brewing ideas and adjustment directions. [more…]

Is it actually feasible to brew coffee with boiling water? Front Street Coffee previously pointed out in a tweet discussing water temperature that water temperature is not the only factor determining whether coffee is good or bad. This article further verifies: 100°C boiling water can absolutely brew good coffee, the key lies in adjusting the extraction plan. The article analyzes the risks brought by excessively high extraction efficiency at high temperatures, introduces response strategies such as shortening time, coarsening the grind, and adopting immersion extraction, and shares in detail the entire process and parameters of using the stirring method combined with 100°C water temperature to brew Sidamo·ALO beans. In the end, this cup of coffee had an extraction yield close to 21%, presenting a full-bodied juicy feel with mango, pineapple, and citrus flavors, and a finish with oolong tea aroma, receiving unanimous praise. [more…]

Should brewing coffee rely on feeling or on data? With the maturation of extraction theory, pour-over coffee has gradually moved from empiricism toward a scientific approach. As a classic reference, the Golden Cup extraction standard, although some of the ranges in its 1.0 version are no longer fully suited to the present, still leaves behind extraction yield and concentration calculation formulas that remain practical today. From Front Street's perspective, this article first reviews the background of the Golden Cup standard and Lockhart's research journey, then focuses on explaining two methods for calculating extraction yield: the traditional dry weighing method, and the method of using a TDS meter to infer extraction yield from concentration. The article also summarizes the definitions of concentration and extraction yield, their interrelationship, and conversion formulas, and reminds that for drip coffee, the water absorbed by the coffee bed requires correcting the weight of the brewed liquid, helping you more accurately evaluate the performance of a cup of pour-over. [more…]

In the world of pour-over coffee, the agitation method is a more aggressive extraction technique than water-stream agitation. It acts directly on the coffee bed through a tool, accelerating the release of soluble flavor compounds. Front Street Coffee shared this method last year, but did not elaborate on the specific steps. This article will systematically sort out the three major application scenarios of the agitation method—the blooming stage, remedial action when extraction efficiency is insufficient, and its use when actively adjusting parameters—and provide an in-depth analysis of the key details to note when using agitation, such as grind size, agitation force, and number of agitations, helping coffee enthusiasts master this technique more precisely. [more…]

The charm of pour-over coffee lies in its ever-changing brewing methods, where different techniques bring out completely different flavor expressions. This article will systematically break down six common pour-over techniques—one-pour, three-stage, 4:6 method, three-temperature brewing, volcano pour, and agitation method—analyzing each one from water-pouring logic and parameter settings to flavor direction. Whether you're a beginner just getting into pour-over or an advanced player looking for a breakthrough, you'll find a key that suits you. At the same time, Front Street Coffee will also share its most commonly used three-stage brewing experience, helping you understand the underlying principles of flavor release, so you can draw inferences and apply them flexibly. [more…]

The 4:6 brewing method was created by粕谷哲, the 2016 World Brewers Cup champion, and its core idea is to let everyone brew good coffee easily. This method splits the total water volume into five pours: the first 40% determines the flavor direction, and the latter 60% shapes the mouthfeel and strength. By adjusting the water volume of each pour, you can change the coffee's sweet-acid balance and body. In this article, Front Street will break down the pour proportions of the 4:6 method in detail, explain the principles behind extraction yield changes, and provide complete brewing parameters. At the same time, we will use Front Street Ethiopia Hachira beans for a hands-on demonstration to help coffee lovers deeply understand the essence of extraction and easily brew a delicious pour-over coffee. [more…]

The reason why a flat white differs from a latte and a cappuccino lies not only in its delicate, thin microfoam, but more crucially in its base—Ristretto. However, opinions on the web about how to make a Ristretto vary widely, leaving many newcomers baffled. This article, from the perspective of Front Street, systematically sorts out what exactly a Ristretto is, its relationship with Espresso, and the two mainstream approaches to making it: one is to directly limit the yield and extract only the front and middle segments; the other is to adjust the grind finer and control the flow rate to build up concentration. The article will also analyze the pros and cons of each method, and why most coffee shops ultimately choose the former. [more…]

The siphon coffee maker, with its experiment-like brewing process, has become the tool of choice for many coffee enthusiasts just starting out. However, to brew a good cup of coffee with a siphon, mastering the operating techniques is only part of the story—choosing the right coffee beans is equally crucial. What kind of coffee is the siphon suitable for brewing? How exactly does it differ from the pour-over coffee commonly seen in cafés in terms of extraction method and filtration method? And how do these differences affect the final taste and flavor? In this article, Front Street Coffee will analyze the two aspects of extraction method and filtration system, guiding you to understand the reasons behind siphon coffee's rich, full-bodied, and intensely aromatic character, while comparing it with pour-over coffee's clean, bright, and well-layered traits, helping you better understand both brewing methods and find the cup that suits you. [more…]

The same coffee beans, extracted with a different approach, will yield a completely different flavor in the cup. From the perspective of Front Street, this article systematically reviews the characteristics and suitable scenarios of four common extraction methods—drip, immersion, pressure, and siphon—and focuses on answering frequently asked questions such as how to brew drip bag coffee, how many times it can be brewed, whether it counts as Americano, and how it differs from instant coffee. Using a 10-gram Front Street drip bag as an example, the article provides a three-stage pouring plan with a coffee-to-water ratio of 1:15 to 1:18 and a total water volume of 150 to 180 milliliters, along with Front Street bean recommendations for each extraction method, helping coffee lovers consistently produce a clean cup of drip black coffee in the office or while traveling. [more…]

The charm of pour-over coffee lies in the diversity of brewing methods; different pouring techniques directly affect the flavor expression and mouthfeel layers of the coffee. This article systematically sorts out six common pour-over techniques: the one-pour method, the three-stage method, the 4:6 method, the three-temperature brewing method, the volcano pour, and the stirring method. From the number of pouring stages, coffee-to-water ratio, extraction time, to grind adjustment, it analyzes one by one the principles and applicable scenarios behind each method, helping coffee enthusiasts understand the release order of sour, sweet, and bitter substances, and choose the most suitable brewing strategy according to the characteristics of the beans, so as to consistently brew a good cup of coffee that suits their own taste. [more…]

Coffee extraction is the key step that determines flavor. About 30% of coffee beans consists of soluble substances, including both aromatic components and mouthfeel-related compounds, and a higher extraction yield does not necessarily mean better quality. This article systematically introduces concentration measurement methods (refractometer, conductivity pen, evaporation and drying), explains the extraction yield conversion formula in detail, and provides specific calculation steps for different brewing devices such as immersion, pour-over, and espresso. It also includes the golden cup concentration recommendations from the SCAA and SCAE, as well as relevant product information from the Front Street Coffee brand, to help enthusiasts understand extraction more scientifically. [more…]

What exactly is the difference between pour-over coffee and espresso? This article compares them across three dimensions—coffee bean selection, brewing method, and caffeine content—and takes a deep dive into the specific workflows of espresso and pour-over coffee, including the extraction parameters and equipment setup used at Front Street Coffee's shops. It also introduces the characteristics and differences between two cold-extraction methods: ice drip coffee and cold brew coffee. Whether you're a beginner just getting into coffee or an enthusiast hoping to refine your brewing skills, you'll find practical reference information here and gain a feel for how different extraction methods change the flavor. [more…]