Bought Starbucks coffee beans but feel puzzled by the grinder settings? Grind size directly determines the success or failure of a cup of coffee. This article uses common everyday items like fine granulated sugar, coarse granulated sugar, sea salt, fine salt, and flour as analogies to help you quickly find the right grind size for pour-over, French press, moka pot, and espresso machine. Beans of different roast levels have different densities, so the same extraction method requires different grinds. Front Street Coffee will guide you through understanding the particle size range corresponding to each grind state, and why light-roasted beans need a finer grind while dark-roasted beans need a coarser grind, so you no longer have to agonize over grind size. [more…]

Grind size is a core variable in pour-over coffee that cannot be avoided, as it simultaneously affects the contact area between water and coffee grounds and the extraction rhythm, thereby determining the flavor direction in the cup. This article starts with coffee bean freshness and resting, explains the difference in extraction yield between fine and coarse grounds, and describes the corresponding taste performance when the grind is too fine or too coarse. It also introduces the method of calibrating grind with a 0.85mm cupping sieve, as well as Front Street Coffee's comparison table of applicable equipment organized by five levels—extra fine, fine, medium-fine, medium, and coarse—to help you find the appropriate grind range across different roast levels and brewing tools. [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…]

Grind size is one of the most critical variables in pour-over coffee—it determines the contact area between water and coffee grounds, and also influences extraction time and the final flavor. This article will systematically sort out the logical relationship between grind size and extraction yield, tell you what kind of taste will appear in the cup when the grind is too fine or too coarse, and also introduce how to use a 0.85mm sieve to calibrate the passing rate, and give specific grinding recommendations for beans with different roast levels. If you do not want to buy an extra sieve, the article also categorizes five levels—extra fine, fine, medium-fine, medium, and coarse—so you can quickly find the right setting by comparing it with your own brewing device. [more…]

Among the many variables that affect extraction results, the combination of grind size and extraction time has long been a subject of debate. This article compares two approaches—"fine grind, fast brew" and "coarse grind, slow brew"—analyzing their differences in flavor complexity, body, and balance. Drawing on the actual brewing parameters for Front Street Ethiopia Huakui, it demonstrates the procedures for fine grind with a short time and coarse grind with a long time, helping coffee enthusiasts understand the applicable scenarios and room for adjustment for each approach. [more…]

In the world of pour-over coffee, beyond the common brewing schools, two opposing approaches have emerged, divided by grind size and brew time: fine grind fast brew and coarse grind slow brew. Both are based on the same extraction principles, yet they deliver entirely different drinking experiences. This article will analyze the theory behind these two approaches from the perspectives of surface area, water flow rate, and dripper pairing, and conduct a practical comparison using the same medium-roast Papua New Guinea · Bird of Paradise beans, using a V60 and a Kono dripper, the same coffee-to-water ratio and water temperature, to observe the specific flavor differences between fine grind fast brew and coarse grind slow brew, helping coffee enthusiasts understand how to choose the right brewing strategy based on grind size. [more…]

The grind size of coffee directly determines the contact area between water and coffee grounds as well as the extraction rate, thereby profoundly influencing the flavor profile of the final cup. However, when faced with different brewing devices and roast levels, how to find the right grind size has become a challenge for many coffee enthusiasts. This article draws on the practical experience of Front Street Coffee, first emphasizing the importance of fresh roasting and bean resting, then carefully analyzing the bidirectional impact of grind size on flavor—too fine leads to bitterness, while too coarse results in a weak and bland cup—and provides specific passing rate references for calibration using a No. 20 sieve (0.85mm). It also offers recommendations for matching brewing devices and coffee beans across five levels: extra fine, fine, medium-fine, medium, and coarse, helping readers find their own perfect cup of coffee. [more…]

When encountering slow drainage and muddy flavors during pour-over coffee brewing, many people's first reaction is to blame the fines, so they buy a sieve to try to solve it. But after sifting out the fines, the clogging does improve, yet the taste becomes flat and dull—why exactly is that? What role do fines actually play in extraction? Starting from a real confusion shared by a friend with Front Street Coffee, this article discusses the dual nature of fines, the actual effect of sieves, and the reasonable direction for choosing pour-over grind size, helping you clarify the balance between grind and flavor. [more…]

From seed to cup, every step determines the final flavor of the coffee, and grind size is often the key link that beginners most easily overlook and most easily get wrong. The tiny differences produced by the same grinder at different settings are enough to make a cup of good beans taste flat or even bitter. This article systematically sorts out the internal relationships between grind coarseness and extraction yield, contact time, and flow rate, and lists one by one the grinding standards corresponding to eight brewing devices: Turkish coffee, espresso, AeroPress, siphon, pour-over, moka pot, cold brew ice drip, and French press. The article also introduces a method for calibrating grind size using a standard sieve, and, based on the SCA-recommended pour-over passing rate, shares the complete brewing parameters and flavor performance of Front Street Ethiopia Huakui natural, for enthusiasts to reference and adjust. [more…]

When making cold brew coffee, should the grind size be coarse or fine? Many enthusiasts habitually assume that grinding finer will increase the concentration, but in a low-temperature, still-steeping extraction environment, this logic does not necessarily hold. Through practical experiments, Front Street used the same Yirgacheffe beans, the same coffee-to-water ratio, and the same steeping time to make cold brew with fine and coarse grinds respectively, testing the concentration and tasting the flavor differences. The results showed that the coarse grind actually had a slightly higher TDS, and its flavor performance was also brighter and sweeter. This article will explain this phenomenon from the perspectives of water temperature and particle movement, and provide grinding recommendations and applicable conditions for making cold brew coffee, helping you make a cup of cold brew with excellent concentration and flavor. [more…]

The choice of coffee grind size directly determines the success or failure of a cup of coffee. From the ultra-fine powder for Turkish coffee to the coarse particles needed for a French press, every brewing device has its corresponding grind standard. The finer the grind, the higher the extraction rate and the slower the water flow; the coarser the grind, the opposite. There are assembly tolerances between different grinders, so even the same setting may not produce coffee grounds of the same coarseness. This article systematically sorts out eight grind levels from finest to coarsest, matching them one by one with devices such as espresso machines, AeroPress, siphon brewers, pour-over, moka pots, cold brew, and French presses, and combines Front Street Coffee's brewing examples to help coffee lovers find a grind plan that suits them. [more…]

There is no unified quantitative standard for coffee grinding, so enthusiasts often use everyday ingredients as analogies to quickly convey the concept of particle size. Common reference points like fine granulated sugar, coarse granulated sugar, sea salt, fine salt, and flour each correspond to different brewing methods and roast levels. This article goes through the particle size characteristics and suitable scenarios for each of these analogous grinds one by one: fine granulated sugar is mostly used for light-roast pour-over, coarse granulated sugar suits medium-dark roast beans, sea salt-like texture is suitable for immersion extraction methods like the French press, fine salt-like texture serves the fast-paced extraction of the moka pot, and flour-like texture is divided into two categories: espresso and Turkish coffee. The grind size described by each analogy is a range, not a single fixed value, and understanding this point helps with more flexible grind adjustment. [more…]

In the coffee grinding process, the production of fines is almost an unavoidable phenomenon, regardless of whether one uses expensive professional-grade grinders or entry-level manual grinding equipment. However, the proportion of fines directly affects the stability of brewing and the final flavor presentation. Choosing a suitable grinder can, to a certain extent, help us reduce the troubles caused by fines. Front Street Coffee specifically conducted a comparative test on the differences in fines generation between manual coffee grinders and electric coffee grinders, analyzing the differences in grinding performance between the two from the perspective of burr structure, helping coffee enthusiasts more clearly understand the characteristics of different devices in grinding function, so as to make choices that better suit themselves. [more…]

In the process of making pour-over coffee, grind size and fines handling directly affect the final flavor. This article focuses on the difference between fines and medium-coarse grounds. It first explains the distribution patterns of coffee particles of different sizes and their effects on extraction, then discusses the dual role of fines in extraction—they may introduce off-flavors but can also enhance complexity. The article further analyzes whether fines need to be sifted out before pour-over brewing and offers practical advice: when the proportion of fines is too high and affects flow rate or flavor, they can be sifted out as appropriate. Finally, using "Front Street Coffee" as an example, it introduces its products and store information to help coffee enthusiasts understand the grinding stage more systematically. [more…]

The coffee grind size directly determines the contact area between water and coffee grounds, thereby affecting the final flavor expression. This article begins with coffee bean freshness management, explaining resting time and the optimal drinking window, then analyzes one by one the taste differences caused by grinding too fine or too coarse. It also provides a specific method for calibrating grind size using a No. 20 sieve, along with a five-level grind classification that can be referenced even without buying a sieve. Combining the brewing practices of Front Street Coffee, the article recommends corresponding grind sizes for different roast levels and brewing devices, helping enthusiasts find the coarseness standard suited to their own taste. [more…]

A delicious cup of coffee is hard-won, because from seed to cup is a very long wait. Even at the final step of extraction, you must ensure that the coffee you use meets brewing standards, because extraction is easy—but have you ever thought about it? Coffee grounds are what extract the flavor compounds, [more…]

Grind size directly determines the extraction direction of a cup of coffee: too fine a grind easily leads to over-extraction and bitterness, while too coarse a grind may result in under-extraction and a weak, bland flavor. Many grinders on the market mark their settings from 1 to 10, but the corresponding coarseness varies across different models. A smaller number usually means a finer grind, but in practice, you need to judge based on your brewing method. Drawing on the hands-on experience of Front Street Coffee, this article sorts out the grinding ranges for common brewing methods such as espresso, pour-over, siphon, and French press, explains whether medium-light roast and medium-dark roast coffee beans are better suited to a medium-fine or medium-coarse grind for pour-over, and provides specific steps for using a 0.85mm No. 20 sieve to check the passing rate, helping coffee enthusiasts find the right grinding parameters. [more…]

A delicious cup of coffee is hard-won, because from seed to cup is a very long wait, and even at the final step of extraction, you must ensure that the coffee you use meets brewing standards, because extraction is easy, but have you ever thought about it—coffee grounds extract flavor compounds, so the water used [more…]

How coarse or fine you grind your coffee directly affects the contact area between water and coffee particles and the extraction time, and it is also a key variable that determines whether a cup of coffee tastes good or not. But grind size is precisely the part that many enthusiasts are least sure about. Starting from Front Street Coffee's practical experience, this article first explains the prerequisite effects of fresh roasting and bean resting on grinding results, then analyzes the different flavor directions of fine and coarse grounds, and afterward gives a specific method for calibrating the pass rate with a 0.85mm cupping sieve. It also lists reference ranges for light, medium, and dark roast beans, and finally includes a practical summary for judging coarseness by brewing device when you do not buy a sieve. [more…]

In the grinding stage of pour-over coffee, the production of fines is almost unavoidable. These tiny particles, with a diameter of less than 0.1mm and a texture close to flour, are far off from the target particle size of 0.6~0.8mm. The source of fines is related both to the brittleness of the coffee beans themselves and directly affected by the quality of the grinder. For coffee enthusiasts, understanding the dual nature of fines—they can both improve extraction efficiency and enrich complexity, and may also bring bitterness and clogging—is the key to brewing the ideal flavor. This article will analyze the causes of fines, the differences between coarse and fine particles, and strategies for dealing with them during pour-over brewing, and provide reference in combination with the practical experience of Front Street Coffee. [more…]