Many merchants who sell coffee beans offer a grinding service, but if you plan to use that ground coffee to extract espresso, Front Street suggests you think twice. This article explains in detail, from three angles—the speed of flavor loss, the impact of carbon dioxide loss on crema, and the demanding precision requirements of espresso grinding—why espresso beans are not suitable for grinding into powder in advance, while also telling you just how short the shelf life of ground coffee really is. If you care about crema and flavor in coffee, this key information is not to be missed. [more…]

Recently, a blogger publicly complained that the Starbucks App pushes promotional messages based on real-time location, saying that they are marketed to wherever they go, sparking heated discussion among netizens. Starbucks customer service said they were not aware of the matter and had reported it to the public relations department. It is worth noting that Starbucks has repeatedly been notified and summoned by regulatory authorities in the Chinese market over personal information collection issues, and in June 2025 its App and WeChat mini-program again appeared on the list of notifications for illegally and improperly collecting and using personal information. This debate over precision marketing and the boundaries of privacy has once again pushed brands' use of user data into the spotlight. [more…]

Recently, a coffee machine labeled "Consumption Poverty Alleviation Cabinet" appeared in an office building cafeteria in Shanghai, with drinks priced as low as under 4 yuan, and two lattes even priced at 0 yuan. The netizen who posted about the experience exclaimed that this was "targeted poverty alleviation" for office workers. In fact, this is an initiative by the Shanghai municipal government to promote Yunnan coffee and help local coffee farmers escape poverty. Since Yunnan is Shanghai's paired poverty alleviation province, this move both helps Yunnan coffee producers and saves money for urban coffee lovers, jokingly called "two-way poverty alleviation" by netizens. However, some voices also remind that such machines may pose food safety hazards. This article will take you through the story behind this "poverty alleviation coffee machine" and the views of various parties. [more…]

The starting point for measuring extraction time may seem like just a matter of a few seconds, but it actually has a profound impact on judging and adjusting coffee flavor. Many coffee enthusiasts are often confused by this in practice: should espresso timing begin when the machine is started, or after the liquid begins to flow? In this article, Front Street Coffee sorts out the correct way to measure extraction time and takes a deeper look at why time is an indispensable part of extraction parameters. From the bloom pour in pour-over brewing to the pressurized permeation in espresso, understanding how time interacts with other parameters can help you quickly pinpoint the problem when the flavor goes off, making every adjustment more purposeful. [more…]

To craft a truly satisfying cup of coffee, scattered tips alone are far from enough—you need to start from the essence of extraction and understand the variables that influence flavor. This article centers on five core elements: freshness, grind, water quality, water temperature, and brewing technique, analyzing the dissolution patterns of different substances in coffee beans to help you make more precise judgments while brewing. It also explains how grinder choice, grind uniformity, and gentle pouring affect the final quality, bringing every brew closer to the ideal state. [more…]

Blue Mountain coffee is hailed as the crown jewel of the coffee world, and its classic, well-balanced flavor draws countless enthusiasts to it. But the market is flooded with products bearing the Blue Mountain name, making it hard to tell genuine from fake. This article systematically outlines practical methods for identifying authentic Front Street Blue Mountain coffee across five dimensions: green bean appearance, grinding feel, aroma performance, flavor balance, and the overall experience when drinking. It also shares dedicated roasting approaches and key operating points tailored to Blue Mountain beans' relatively low density and higher moisture content, helping you properly handle this precious bean variety at home as well. [more…]

The charm of pour-over coffee lies in its ability to precisely control water temperature and flow, thereby faithfully reproducing the original flavors of different coffee beans. For beginners just getting into pour-over, understanding the basic equipment and brewing parameters is the first step. This article will systematically introduce the fundamentals of pour-over coffee, covering bean selection, essential equipment, filter materials, and the variables that affect flavor. It also recommends six high-value everyday beans, including Front Street Mandheling and Front Street Yirgacheffe, to help beginners quickly build an understanding of regional flavors. Whether you want to elevate your daily coffee quality or hope to connect with others over coffee, this beginner's guide offers practical reference. [more…]

In the parameter system of pour-over coffee, the coffee-to-water ratio and the coffee-to-liquid ratio are two parallel measurement logics. The former relies on a digital scale to precisely control the amount of water poured, while the latter judges the final volume of coffee liquid through the markings on a serving carafe. Many classic utensils, such as the Kono serving carafe and the Hario Cloud server, have hidden scale markings that correspond to specific coffee dose designs. The coffee-to-liquid ratio is more flexible when dealing with clogged drippers and deep-roast foam handling, while the coffee-to-water ratio excels in the precision of staged pouring information. The two can also be converted into each other: coffee grounds absorb about twice their own weight in water when saturated, so a coffee-to-water ratio of 1:15 is roughly equivalent to a coffee-to-liquid ratio of 1:13. Only by understanding this logic can reasonable adjustments be made according to different beans and utensils. [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…]

Recently, a customer at a Sexy Tea store discovered that an employee was actually using a pipette—commonly found in laboratories—to measure milk tea ingredients. The scene was photographed and quickly sparked heated discussion on social media. As precision experimental instruments, pipettes can measure liquids more accurately, but their operating standards are strict, and improper use may pose food safety risks. Many netizens with laboratory experience pointed out that untrained employees operating such equipment risks liquid backflow and contaminated tips, and whether disposable tips meet food-contact standards is also questionable. Opinions continue to clash over whether laboratory instruments can be used in food service settings. [more…]

How fine exactly should the grind size for espresso be? This is a core question that troubles many home coffee enthusiasts. Taking a practical approach, this article systematically explains how to judge whether the grind size is appropriate through extraction time and flavor feedback, and emphasizes that dialing in the grind is not a one-time task—the condition of the coffee beans, air humidity, and even the resting time after roasting can all affect extraction stability. The article also introduces a basic formula for quickly determining the initial grind size, as well as specific methods for fine-tuning by tasting the espresso. Finally, Front Street Coffee's classic espresso blend, recommended as a bean suitable for recreating café flavors at home, is also introduced in detail in the article. [more…]

Walking into a café and facing a bewildering array of names like latte, cappuccino, macchiato, and mocha, have you ever felt completely lost? These drinks are all actually based on espresso, and by adjusting the proportions of coffee, milk, milk foam, chocolate, and other ingredients, they evolve into distinctly different flavors and mouthfeels. This article takes the production practices of Front Street Coffee as an example to systematically sort out the main members of the espresso family, explain in detail each drink's recipe proportions, the origin of its name, and its tasting characteristics, and share the extraction parameters and flavor performance of Front Street's Sunflower Warm Sun blend beans, helping you not only clearly understand the differences among various coffees, but also flexibly adjust according to personal preference and find the cup that suits you best. [more…]

Geisha coffee beans now frequently appear in major coffee competitions, becoming a star variety in the specialty coffee world. Where exactly did it come from, and how did it step by step reach the world stage? This article will start with the variety definition and origin of Geisha, sorting out its development trajectory from the forests of Ethiopia to Panama's Hacienda La Esmeralda, and provide a detailed interpretation of Hacienda La Esmeralda's Red Label, Green Label, and Blue Label Geisha grading systems and their respective flavor characteristics. At the same time, Front Street Coffee will share years of cupping and roasting experience, analyzing methods for identifying Geisha green beans, light-roast approaches, and brewing suggestions, helping coffee enthusiasts clarify the true and false claims in Geisha's history. [more…]

Many coffee enthusiasts wonder when they see baristas using electronic scales in cafés: does making a cup of coffee really require such fuss? Couldn't you, like an experienced chef, just eyeball it or use a measuring spoon or cup and still brew good coffee? An electronic scale is indeed not an absolute necessity for making coffee, but eyeballing and measuring spoons have obvious inconsistencies. This article, based on actual tests at Front Street Coffee, first uses measuring spoons as an example to reveal that dark-roasted and light-roasted beans can differ by several grams in weight at the same volume, then explains the huge impact of dose deviation on concentration and flavor; next, using espresso as an example, it explains why cup markings cannot accurately reflect liquid weight. The article ultimately suggests that if you want consistent output or to study parameters, an electronic scale remains a trustworthy tool. [more…]

For baristas, the senses are the tools they rely on for their livelihood; once they catch a cold and their nose is blocked, they have no way to judge the quality of that day's output. A research team in Taiwan combined artificial intelligence learning algorithms with an electronic nose to develop a system capable of distinguishing differences in coffee aromas, with recognition accuracy reaching 81% to 98%. This technology is not only expected to help coffee professionals maintain quality control when their senses fail, but may also be applied to quality verification across the coffee industry chain. At the same time, the research team is also developing an electronic tongue, electronic eye, and tactile system in parallel, attempting to cover every link in coffee quality control from multiple dimensions. [more…]

The French press, with its simple operation and lightweight design, has become a preferred choice for many households when brewing coffee. It requires no cumbersome equipment or techniques, allowing anyone to easily get a cup of good-tasting coffee. However, the French press's filtration precision is relatively lower than other devices, which has always been a focal point of discussion. But precisely because the metal filter retains the lipids in the coffee beans, it can present a more complete layering of flavors, thus earning a loyal following among home users. This article will systematically explain how to use a French press to make a cup of low-acid, rich, and smooth coffee, covering bean selection, coffee-to-water ratio, grind size, water temperature control, and specific operational steps, and will provide specific product recommendations from the Front Street Coffee brand. [more…]

For coffee to taste good, freshness is the first essential, and mastering the grind size is the second priority, directly affecting the extraction and the strength of the flavor. In principle, the finer the coffee grounds and the longer the brewing time, the stronger the taste; conversely, the weaker it is. The longer the extraction time, the coarser the beans should be ground, to avoid over-extraction causing bitterness; the shorter the extraction time, the finer the beans should be ground, to avoid under-extraction. Different brewing devices have different requirements for grind size: a French press is suited to coarse grinding, filter paper or a siphon needs slightly finer, and a moka pot, due to different heat sources, has room for flexible adjustment. Espresso relies even more on a precisely constructed dual-burr grinder to brew a thick, authentic Italian flavor. This article will provide a complete analysis of the grinding essentials for each device and visual judgment techniques for espresso. [more…]

Mandheling coffee is famous for its rich, intense flavor and distinctive herbal, spicy aroma, and the darkest-roasted bean on Front Street Coffee's menu is precisely this one from Indonesia. Many enthusiasts are curious: where exactly does this signature herbal flavor come from? This article will break down, one by one, the logic behind the rich flavor of the "Two Lakes, Two Man" blend—from Sumatra's growing environment, the evolution of coffee varieties, the wet-hulling process born of the tropical climate, and the way Front Street Coffee's Lintong Mandheling is presented—guiding you to a deeper understanding of the terroir and craft codes behind this classic coffee. [more…]

Many coffee enthusiasts notice that the same beans taste stronger and more pronounced when brewed as an Americano on an espresso machine than when made with a pour-over. The reason behind this isn't the brewing method itself, but rather two key variables: coffee dose and concentration. Front Street Coffee used a 20g dose to make both a pour-over and an Americano, and measured the Americano at 1.95% concentration versus 1.54% for the pour-over—a significant difference. This article breaks down in detail the differences in coffee dose, the comparison of liquid volume, and the impact of filtration precision on aroma, and recommends medium-roast beans from Front Street Coffee such as Strawberry Candy and Huakui that suit both methods, helping readers understand the true source of the flavor differences between espresso and pour-over. [more…]

When faced with a coffee bean you've never encountered before, how do you quickly develop a suitable pour-over plan? This article starts with simplifying the brewing framework and shares a practical method: first roughly categorize coffee beans by roast level, establish a highly versatile brewing plan for each category, and then identify where unfamiliar beans belong through flavor descriptions and bean color. As experience accumulates, gradually refine the categories, deriving medium roast from light roast and dark roast, and even making further adjustments for special varieties such as Geisha. Front Street Coffee uses its own two brewing plans as examples to show that by keeping the dose, ratio, and technique consistent and adjusting only the water temperature, grind size, and dripper, most beans can be handled. This approach not only reduces decision-making costs but also leaves room for subsequent optimization. [more…]