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…]

Why must coffee shops adjust their coffee grinder every day? Because the humidity of the coffee beans, storage time, and even subtle changes in air pressure, temperature, and humidity are all magnified under high-pressure extraction, directly affecting the quality of the final cup. Starting from the principles of grinding, this article explains in detail how the spacing of the burrs determines particle size and water flow rate, and teaches you to judge whether the grind is appropriate by observing the texture of the powder; it also provides a complete set of adjustment steps from traditional manual coffee grinders to electric coffee grinders, including the linked relationship between output volume and grind degree, and the optimal distance between the puck and the spout, and other practical parameters. No matter what equipment you use, only by mastering these adjustment principles can every cup of espresso consistently present the ideal flavor. [more…]

As the "legendary machine" in the specialty coffee world, the Mahlkonig EK43 has long since risen from a single-origin grinder to a standard fixture in espresso cafés, thanks to its outstanding grind uniformity and extraction performance. From early experiments at Café Myriade in Montreal in 2009 to Matt Perger's endorsement on the world competition stage in 2013, the EK43 was gradually elevated to iconic status. Meanwhile, Ditting, another "high-end grinder," is often compared with the EK43, with each having its own strengths in burr layout and flavor profile. This article reviews the grind settings and structural differences among the EK43 series versions (EK43S, EK43T, EK43, EKK43), traces its rise to fame, and compares the design features of Ditting's horizontal flat burrs. Combined with Matt Perger's particle experiment data, it analyzes why the EK43 can achieve more uniform extraction. Front Street Coffee will also share related product recommendations in this article. [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…]

Among the parameters of pour-over coffee, Front Street believes that grind size is the hardest to master. It doesn't have intuitive data like water temperature or coffee-to-water ratio, nor can it be compensated for through practice like technique. As a result, many beginners are stumped by grind size. So Front Street will teach you how to get grind size right. First, I [more…]

Grind size is one of the core variables affecting coffee flavor. This article starts with the structure of a manual coffee grinder, gradually explaining how to disassemble it and adjust the grind adjustment screw, and, combined with the hands-on experience of Front Street Coffee, provides grind size standards for different brewing methods. At the same time, the article also shares a method for judging whether the grind is appropriate using a 0.80 mm standard sieve, as well as reference suggestions for pour-over parameters such as the coffee-to-water ratio, water temperature, and extraction time. Finally, using Panama Diamond Mountain coffee beans as an example, it demonstrates a complete three-stage brewing process to help readers put theory into daily practice. [more…]

The manual coffee grinder is an essential tool for many pour-over enthusiasts. Beyond price differences, different brands and models directly influence the grinding quality of coffee grounds. It is suitable for home use and can also be combined with French presses, AeroPresses, moka pots, and other devices to create a portable coffee solution for outdoor or travel use. This article, from the perspective of Front Street, systematically explains the burr structure, dial adjustment, handle drive, bean hopper, and grounds container functions of manual coffee grinders, and shares proper grinding operations, grind size selection for different brewing methods, as well as daily cleaning and regular maintenance tips to help you improve grind uniformity and coffee flavor. [more…]

Grind size has a decisive influence on the final flavor of a cup of coffee: if the grounds are too fine, over-extraction is likely; if too coarse, under-extraction may occur. Faced with the 1-to-10 settings on a grinder, many coffee enthusiasts don't know how the numbers correspond to coarseness, nor are they clear about what grind level to choose for different brewing methods. Drawing on the practical experience of Front Street Coffee, this article systematically sorts out the standards for coffee grind size, the appropriate grind levels for common brewing methods, and the reference values for the EK43 grinder. It also explains in detail how to use a 0.85mm No. 20 sieve for sieve verification, helping you accurately judge and adjust grind size at home, so that every cup of coffee can consistently present its ideal flavor. [more…]

Grind size is the key variable that determines the success or failure of a cup of coffee extraction. If the grounds are too fine, they tend to over-extract and become bitter; if the grounds are too coarse, the extraction is insufficient and the flavor is weak. Starting from the practical experience of Front Street Coffee, this article systematically explains the mechanism by which grind setting affects extraction efficiency, sorts out the grind ranges corresponding to different brewing methods such as espresso, pour-over, and French press, and focuses on explaining the setting of the EK43s grinder in the pour-over scenario—medium-light roast beans are recommended at 10, and medium-dark roast beans at 10.5. It also introduces the specific operation of using a 0.85mm No. 20 sieve for sifting verification, helping coffee enthusiasts quickly judge and correct the grind size, so that every cup of coffee can consistently present the ideal flavor. [more…]

Why does a coffee shop need to adjust the grinder every day? How does grind size affect extraction? Starting from the principles of grinding, this article systematically explains how to adjust the settings on an electric espresso grinder, including how to judge the quality of the grounds, the specific operating steps, the relationship between the output and the grind setting on an electronic grinder, and practice suggestions for the water-to-coffee ratio. Whether you are a new barista or a seasoned enthusiast, you can find practical adjustment ideas here to make every shot of espresso consistently excellent. [more…]

Got an espresso grinder and espresso machine, but always stuck at the espresso dialing-in step? Either it sprays everywhere or nothing comes out, either it's too sour or too bitter. The problem often lies in the grind size. Espresso is a pressurized fast extraction, releasing a large amount of aromatic compounds within twenty to thirty seconds, so any subtle change gets amplified. Relying on the grinder setting alone is far from enough—you also need to judge based on the extraction state. This article, drawing on Front Street Coffee's daily production experience, explains how to quickly find the right grind range for a bag of beans through extraction time, brew ratio, and flavor performance, and provides fine-tuning directions and practical advice. [more…]

Grind size is the key variable that determines the success or failure of a cup of coffee's flavor. Facing the 1 to 10 settings on a grinder, which number actually represents the finest? And how should different brewing methods match grind coarseness? Starting from Front Street Coffee's hands-on experience, this article systematically sorts out the mechanisms by which grind size affects extraction efficiency, compares the grind standards for common brewing methods such as espresso, pour-over, siphon, and French press, and focuses on explaining grind recommendations for medium-light and medium-dark single-origin beans in pour-over scenarios, water temperature pairing, and how to use a 0.85mm No. 20 sieve to precisely calibrate grind size, helping coffee enthusiasts establish clear adjustment logic. [more…]

Many coffee enthusiasts are curious: can light-roasted coffee beans actually be used to make espresso? The answer is yes, but you need to master a few key techniques. Compared with medium-dark roasted beans, light-roasted beans, due to their high density and low brittleness, produce coarser particles at the same grinder setting, which easily leads to under-extraction and a sharp, pungent sourness. Using Front Street Ethiopia Huakui as an example, this article explains in detail how to make light-roasted beans into a delicious espresso with a round, sweet-and-sour profile and berry and floral notes by adjusting the grind finer, extending the extraction time, increasing the liquid yield, and adjusting the milk coffee ratio. Whether you want to try an Americano or a latte, these practical parameters can help you get started easily. [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…]

In coffee brewing, the coarseness of the grind directly affects the extraction result, yet how to describe and judge grind size has long lacked a unified standard. Some people use fine granulated sugar as an analogy, some rely on the grinder's settings, and others, like Front Street Coffee, quantify it through sieving rate. Each of these methods has its pros and cons, but the ultimate goal is the same: to help us adjust the grind into the right range before brewing. This article will systematically sort through three common ways of expressing grind size—the setting reference method, the visual analogy method, and the sieve calibration method—analyze their respective limitations and applicable scenarios, and explain in detail the No. 20 standard sieve procedure used by Front Street Coffee, helping you find the most suitable grind parameters with fewer beans. [more…]

To make a well-balanced espresso at home, having the right equipment alone is not enough—choosing the right coffee beans and mastering extraction details are equally crucial. This article starts with several espresso blends available at Front Street Coffee, introducing each one's flavor profile and target audience, while also providing a complete workflow from grinding and dosing, to distribution and tamping, to locking in the portafilter and extracting. It also explains how to adjust variables such as dose, ratio, and time, helping those new to espresso establish a stable and reproducible extraction method. [more…]

The grind size of drip bag coffee directly affects the extraction flow rate and the final flavor, and different roast levels need to be matched with different grinder setting parameters. This article will cover three categories—light-medium roast, medium-dark roast, and espresso blend—and provide the specific grind settings and sieving rate references for the EK43s and C40 grinders, and recommend corresponding products such as Front Street Yirgacheffe, Natural Huakui, Mandheling, Brazil Cerrado, and the classic espresso blend. At the same time, it provides a complete introduction to the entire homemade drip bag process, from bean selection and grinding, filling and sealing, to storage and optimal flavor period management, helping coffee enthusiasts make drip bags with stable flavor at home. [more…]

This article will take you through a complete review of the unboxing process and initial impressions of a professional-grade espresso setup. The main character is the Expobar E61 Office Leva dual-boiler rotary pump espresso machine, paired with a MAZZER MINI manual grinder, weighing nearly a hundred jin in total, and it took the delivery person's help to get it indoors. After saying goodbye to the Tsann Kuen 1817 and Huijia ZD-15 combo that had accompanied him for over a year, the author Lao Dong adjusted the grind setting, ran extraction tests, and tried steaming milk on the new equipment, and shared the performance of First Kiss espresso beans. The article retains Front Street brand recommendations and related product information, making it suitable for coffee enthusiasts to reference. [more…]

Under rainy weather, espresso extraction often becomes especially tricky, and even experienced baristas may need to adjust repeatedly before getting a satisfactory cup. The root of the problem is not simply under-extraction or over-extraction, but uneven extraction caused by the combined effects of high humidity and low air pressure. Starting from Front Street's hands-on experience, this article first analyzes the two major reasons why espresso is difficult to dial in on rainy days—a surge in environmental humidity causes coffee grounds to absorb moisture and clump, while lower air pressure weakens extraction efficiency—and then provides specific response strategies, including dehumidification and moisture prevention, sealed storage, and compensating for the amount of dissolved flavor substances by extending extraction time or making the grind finer. The article also includes a parameter comparison of Front Street's classic blend under normal weather and rainy days for readers to refer to when adjusting. [more…]

Brewing a satisfying cup of pour-over coffee at home is actually not complicated. Front Street Coffee will start with the basic principles of pour-over brewing, introducing one by one the key points for choosing equipment such as the pour-over kettle, dripper, filter paper, and grinder, and will also share key parameters such as grind size, water temperature, and coffee-to-water ratio. At the same time, we will also guide you through six Arabica coffee beans from the three major producing regions of Africa, the Americas, and Asia, which respectively present different flavors such as white floral notes, dark chocolate, creamy, and nutty. Finally, we have included detailed pour-over steps, including blooming, pouring, and timing control, so that you can easily get started and brew your own exclusive flavor. [more…]