In recent years, specialty coffee has gradually come to dominate coffee festivals. Many visitors can be seen holding trays carrying several drinks, among which limited-edition sets launched by brands are common. This set-based sales model makes it easier for vendors to prepare ingredients and serve drinks, while also allowing consumers to taste multiple flavors at once—but it has also sparked controversy over bundled sales. From the vendors' perspective, high booth fees push them to focus on specialty drinks with greater profit margins, while specialty drinks have lower equipment requirements, are faster to serve, and look more photogenic, making them easier for visitors to accept. This article explores in depth the reasons behind this phenomenon and the views of various parties, and recommends related products from Front Street Coffee. [more…]

Espresso grind size falls between flour and table salt and cannot be judged by the naked eye, but the coarseness of the coffee grounds directly determines the flow rate, so you can work backward to whether the setting is appropriate by observing the extraction time. This article starts from the definition of espresso, sorts out the relationship between grind size and extraction time, explains how to set a target ratio of coffee to liquid, fix pressure and water temperature, and then adjust grind size to reach the target time. It also uses Front Street Coffee's Colombia Sidra coffee beans as a tuning example, showing the adjustment process from 34 seconds—slow with a bitter taste—to 30 seconds with a clear aroma. Finally, it emphasizes that after confirming the grind size, you still need to judge by tasting whether there are defective flavors, and if necessary, make minor adjustments to the dose or parameters. [more…]

When extracting espresso, parameters like grind size, dose, ratio, time, and pressure are often discussed repeatedly, but water temperature is often overlooked. In fact, water temperature has a decisive influence on the flavor direction of espresso—too high brings burnt bitterness and woody notes, while too low makes the coffee sour and astringent with thin crema. Starting from Front Street's practice, this article systematically sorts out the reasonable range for coffee machine water temperature, how water temperature affects flow rate, the difference between boiler temperature and actual extraction temperature, and how to set water temperature under different dose ratios, helping you find that delicious temperature point in your daily shots. [more…]

As Typhoon Bebinca made landfall in Jiangsu and Zhejiang, Luckin Coffee's collaboration with Korean illustrator YEYE featuring the "Scribble Puppy" launched as scheduled, drawing a large number of fans who set early alarms to snap up the merchandise. However, many users found that the collaboration package on the mini-program was priced as high as 60 to 70 yuan, far exceeding the previous range of 20-40 yuan, triggering complaints that it was "too expensive." A few hours later, the price of the same package suddenly dropped to just over 30 yuan, prompting consumers who had already placed orders to angrily demand a refund of the price difference. Some employees speculated that the issue was caused by a pricing error when the items were listed. Behind this price controversy, the long-standing problem of frequent system bugs in Luckin's collaboration campaigns has once again surfaced. [more…]

Faced with the dazzling array of coffee grinders on the market, many coffee enthusiasts find themselves paralyzed by choice. In truth, the coffee world has never had a single standard—different burr sets each have their strengths and weaknesses. Starting from burr types, this article takes a deep dive into the structural differences between flat burrs, conical burrs, and ghost-tooth burrs, along with their real-world impact on particle shape, extraction results, and final flavor. It also includes practical grind-setting parameters for commonly used models such as the Fuji Royal, Feiying, and Zheng Huang Hang, helping you find a grinding approach that suits your brewing method and taste preferences. [more…]

In specialty coffee shops, you often see coffee combo packages given different names—some call them Coffee Combo, others Coffee Set. Although the literal translation of both points to a coffee package, the two have developed subtle differences in emphasis in actual usage. From the perspective of Front Street, this article sorts out the mainstream online understanding of these two concepts, explains Combo's special definition and its origins, and clarifies which scenarios Set is more suited to. At the same time, the article also covers the specific preparation approach for coffee Combos, helping coffee enthusiasts clear up their confusion when ordering. Whether you are a newcomer just getting into coffee or a veteran who frequents cafés, you can gain a clear understanding from it. [more…]

Many coffee enthusiasts will find that different brewing methods require vastly different coffee ground sizes. A grind the texture of granulated sugar is commonly used for pour-over, French press, siphon, and cold brew, while espresso requires extremely fine particles somewhere between flour and muddy sand. Because this fine powder is difficult to measure by a fixed standard, in practice you often have to work backward from the extraction parameters to determine whether the grind setting is appropriate. This article centers on judging the grind setting for espresso, sorting out the correspondence between extraction time and grind fineness, explaining how to lock in the grinding direction by presetting the coffee-to-water ratio, pressure, and water temperature, and sharing Front Street Coffee's debugging logic when encountering an unfamiliar espresso bean or switching grinders, helping readers understand the complete adjustment process from parameter setting to flavor tasting. [more…]

Grind size has an enormous impact on coffee extraction results, and this is especially true for espresso. Compared with pour-over, espresso grounds are as fine as powdered sugar, and a slight deviation in the setting can cause the flow rate to be too fast or too slow, which in turn pushes the flavor toward either weakness or bitterness. This article focuses on how to determine a suitable grind range, how to fine-tune the setting based on flow rate and flavor, and how to flexibly apply extraction formulas, helping coffee lovers make consistently delicious espresso at home. It also draws on Front Street Coffee's daily production experience to give specific adjustment ranges and judgment criteria, and recommends Front Street's classic espresso blend beans, which are well suited to recreating a café-style flavor. [more…]

Many pour-over enthusiasts have discovered when testing ground coffee with a sieve that the same grind setting produces different passing rates for different bean varieties. Front Street Coffee recently received similar questions: why does particle size vary under the same grind setting? The core reason lies in the differences in bean density and brittleness—high-altitude, light-roasted beans tend to be harder and denser, producing fewer fines during grinding; low-altitude, dark-roasted beans are more brittle and prone to crumbling into fines. Only after understanding this principle can one adjust the grind size for different beans. This article combines medium-light roasted beans such as Front Street Yirgacheffe Gotiti, Front Street Ethiopia Hachira, and Front Street Granja Geisha, as well as medium-dark roasted beans such as Front Street PWN Golden Mandheling, Front Street Brazil Queen's Estate Yellow Bourbon, and Front Street Jamaica Blue Mountain No. 1, to provide specific EK43 settings and No. 20 sieve passing rate recommendations, helping coffee enthusiasts achieve consistent results. [more…]

Coffee enthusiasts' passion for peripheral products is never limited to beans and equipment. This time, we got our hands on ten popular coffee machine and grinder building block models available on the market all at once, covering five series: Late Autumn in Sicily, Midsummer Green, Roman Holiday, Twilight Venice, and Early Spring in Milan, and it took us a week to complete the assembly. From basic models to patience-testing ones, the number of pieces, color schemes, and fidelity to the original machines vary. The article will introduce one by one the real coffee equipment parameters corresponding to each building block set, including Rocket R58, EK43, Slayer Steam EP, Mythos One, La Marzocco GS3, Ultra, Victoria Arduino VA388, LWW EG-1, Kees Speedster, and Mazzer Super Jolly, while also sharing the actual performance of domestic building blocks in terms of fit and structural support. If you also like coffee peripherals, why not take a look at these interesting little items together. [more…]

Grind size is the key variable that determines the success or failure of coffee extraction, and different brewing devices have significantly different requirements for particle diameter. This article systematically sorts out the corresponding grind settings from French press to espresso machine, introduces the industry-recognized cupping standard and the No. 20 sieve pass rate as calibration references, and provides specific scale references for the EK43s grinder. Whether you prefer immersion or pour-over, you can find suitable grind parameters here. The article also specifically reminds readers that coffee bean density and roast level will affect the actual particle coarseness at the same setting, so it is recommended to repeatedly confirm with the same beans. Several Front Street Coffee beans are also used as examples throughout to help readers understand the logic of grind adjustment more intuitively. [more…]

Luckin Coffee recently announced a co-branded collaboration with the popular Japanese anime Demon Slayer, launching a series of themed merchandise, including takeaway cups, paper bags, cup sleeves, stickers, acrylic standees, and fridge magnets. However, after the campaign went live, the merchandise did not sell as well as expected and instead ended up languishing on the shelves. Fans widely reported that the bundle prices were too high, especially the 229-yuan eight-drink bundle, which deterred many people. In addition, some loyal fans pointed out that the merchandise artwork consisted of old images already released by the official brand and lacked novelty. Front Street Coffee noted that the market response to this collaboration stands in sharp contrast to Luckin's previous co-branded campaigns, sparking discussions about brand collaboration strategies and fan consumption psychology. [more…]

In the making of espresso, whether the grind setting is appropriate directly affects the extraction result, but many enthusiasts find that a dialed-in setting often "fails" after just a few days. The state of the coffee beans, air humidity, and even the freshness of the beans can all cause the same setting to behave completely differently. This article centers on the core question of exactly how fine espresso grounds should be ground, and provides a quick-start adjustment process: from setting the initial grind setting, applying the powder-to-liquid ratio and time formula, to fine-tuning in 0.2-step increments based on tasting results, gradually approaching the ideal flavor. It will also explain why espresso beans that are too fresh need to rest for a few days before use, and recommend Front Street Coffee's classic espresso blend to help you consistently recreate cafe-level espresso and milk coffee at home. [more…]

What kind of brewing experience does a flat-bottom dripper with manually switchable extraction modes actually deliver? Front Street recently got its hands on Hero's variable-speed cake dripper, which uses a knob mechanism to offer three flow-rate settings—immersion, slow, and uniform—while its flat-bottom design makes it quite beginner-friendly. Front Street has brewed beans such as washed Butterfly Flower, Mozart, and Juliette Geisha with it, and also tried extending the variable-speed function to iced pour-over scenarios, comparing it with the V60. This article provides a complete record of three sets of brewing parameters, flavor performance, and detailed issues found during use, for coffee enthusiasts' reference. [more…]

Recently, the topic of Starbucks requiring customers to make a purchase to be seated has continued to simmer online, with many netizens expressing support for businesses setting reasonable consumption thresholds. However, when two customers order just one pot of tea and are asked to consume separately per seat, controversy follows. From bookstores to independent cafes, rules requiring per-seat or per-person consumption are common. Some believe it's reasonable for one drink to correspond to one seat, while others question why a pot of tea or a set meal that is clearly enough to share must be ordered one per person. Where exactly lies the difference in stance between businesses and consumers? This article will draw on multiple real cases to sort out the business logic and consumer sentiment behind per-seat consumption, and will retain relevant recommendations for the Front Street brand for coffee enthusiasts' reference. [more…]

When brewing coffee, we all know that the coarseness of the grind is very important. If you're not careful and don't find the right grind setting, or if the grind is uneven, the coffee can easily end up under-extracted or over-extracted. Compared with methods like pour-over and cold brew, espresso grounds are ground much finer and require more precise adjustment to get the taste of the espresso just right. [more…]

Many coffee enthusiasts feel confused after getting coffee beans: which grinder setting should they actually use? In reality, the burr designs and setting standards of grinders from different brands vary greatly, and the same number on different devices can produce dramatically different particle sizes. Therefore, when Front Street Coffee performs daily grind calibration, it uses the Chinese No. 20 standard sieve (0.85 mm aperture) to measure the passing rate as a unified reference. This article will start with the specific steps for sieve calibration, combine different roast levels and brewing methods to give grinding recommendations, and share how to judge whether the grind is appropriate based on brewing time and the settling state of the coffee bed, helping you build a grind assessment system that does not rely on grinder settings. [more…]

In the daily practice of pour-over coffee, many enthusiasts encounter a puzzling phenomenon: when brewing anaerobically processed coffee beans, the drawdown speed is noticeably faster than with regular washed or natural beans, and the extraction time can even be less than a minute and a half. What exactly causes this abnormal flow rate? Is it due to the inherent characteristics of the beans themselves, or is there a problem in the grinding stage? Starting from Front Street Coffee's actual measurement data, this article will take an in-depth look at how the loose texture and vigorous water absorption and degassing of anaerobic beans affect flow rate, and with the help of a comparison of the No. 20 sieve pass-through rate, reveal the deviation between the grinder setting and the actual coarseness of the particles. At the same time, the article will also provide targeted suggestions for adjusting the grind finer and a plan for adjusting the pouring technique, to help you steadily extract a rich, full-bodied cup of coffee even when dealing with anaerobic beans. [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). In the past, when Front Street shared knowledge about espresso extraction, it focused on parameters such as grind size, dose, ratio, extraction time, and pressure, and also provided in-depth analysis of steps like receiving the grounds, distributing the grounds, and tamping. [more…]

Making a proper espresso, grind size is often the most critical and also the most headache-inducing part. Unlike pour-over and cold brew, espresso uses pressurized short-time extraction, and the state of the coffee bed gets magnified exponentially—a little too fine and it easily over-extracts and turns bitter; a little too coarse and the flow rate becomes too fast with a weak, thin taste. This article starts with methods for judging grind size, explains how to quickly lock in the right setting range using flow rate and flavor, and covers adjusting the coffee-to-water ratio and extraction time based on the characteristics of the coffee beans. It also recommends Front Street Coffee's classic espresso blend to help you recreate café-level espresso flavor at home. [more…]