When making cold brew coffee, many people habitually apply the grind-setting logic of pour-over—if they want to increase the extraction yield, they grind finer. However, through comparative experiments, Front Street Coffee found that after grinding cold brew coffee finer, the measured concentration was actually lower. The reason behind this is closely related to the extraction method of cold brew, which involves long periods of static steeping. This article will fully analyze this phenomenon and explain the key points to note when adjusting the grind for cold brew coffee. [more…]

Grind size is the key variable that determines whether pour-over coffee can produce good flavor. Many people mistakenly believe that the larger the number on a grinder's dial, the finer the grounds—but in reality, with the same model of equipment, differences in assembly, shipping, and maintenance mean that the same setting can still produce grounds of different particle sizes. Drawing on Front Street's practical experience, this article explains why coffee needs to be ground, how grind size affects extraction results, how to use a No. 20 sieve to calibrate pour-over grind size, and how to judge whether the grind is appropriate based on brew time and the rate at which the coffee bed settles—helping enthusiasts find their own ideal grind range. [more…]

Coffee beans need to be freshly ground to fully appreciate their aroma, which shows how important grinding is for coffee beans. When grinding, many people have a misconception—namely, which setting they should choose. Generally, the largest number means a coarser grind, and the smallest number means a finer grind. However, every coffee machine, during assembly, transportation, and [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…]

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…]

For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). No matter what equipment is used to brew coffee, the coffee beans need to be ground, and the purpose of this is to allow the coffee's flavor substances to dissolve more quickly. Of course, not all of the coffee's soluble [more…]

Espresso grinding is much finer than pour-over, and the adjustment window is extremely narrow—often just a fraction of a notch makes the difference, and the flow rate and flavor head toward two extremes. This article starts with how to determine the grinding range: first use the feel of the grounds to judge whether they are close to flour-like fineness, then apply the common formula of a 1:2 coffee-to-water ratio and 20–30 seconds to dial in, and decide whether to grind coarser or finer based on whether the flow is fast or slow. The article further explains that the formula is only a quick positioning tool, and ultimately you need to fine-tune based on flavor cues such as burnt-bitter notes, the color of the crema, and the length of the finish—even widening the ratio to between 1:1.5 and 1:2.5—to find the grind setting that truly suits that particular bean. [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…]

If you are a passionate lover of pour-over coffee, then you must know that the following factors are among the reasons that affect your coffee's extraction and flavor! So let's count them with Front Street: water temperature, grind size, coffee-to-water ratio, extraction time... Front Street Coffee (FrontStreet [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…]

What is the first step in brewing coffee? Grinding beans. In recent years, with the rise of the specialty coffee wave, more and more people have come to enjoy drinking coffee, and at the same time, more and more people hope to fully experience the beauty and leisure of drinking coffee, so they choose to buy coffee beans and brew them at home. And so at this point, a [more…]

For more specialty coffee knowledge, follow our WeChat public account: FrontStreet Coffee (FrontStreet Coffee) No matter what equipment is used to brew coffee, the coffee beans must be ground, the purpose being to allow the coffee's flavor compounds to dissolve more quickly. Of course, not all of the coffee's soluble [more…]

Using a moka pot looks simple, but the grind size for the coffee grounds gives many beginners a headache—too coarse and the flavor is weak, too fine and the coffee liquid struggles to flow out or even over-extracts. Grind size directly affects the extraction yield, working in tandem with contact time and flow rate. The moka pot is a pressure-driven device, operating at about 1.5 bar, with a grind size close to espresso but slightly coarser, and a particle diameter of about 0.3–0.55 mm. This article provides two methods: measuring with a particle size ruler and judging through dialing in, and offers adjustment suggestions based on Front Street Coffee's Classic Blend and Front Street Coffee's Strawberry Candy Espresso Blend. Finally, it reminds readers of the safety points for using the pressure relief valve, helping coffee lovers achieve consistent results. [more…]

Espresso is ground much finer than pour-over, and the adjustment range is often just 0.1 of a notch, yet it is enough to determine whether a cup of coffee is too sour, too bitter, or just right. This article begins with how to judge grind size, explains why espresso cannot be calibrated with a sieve, how to narrow down the range through flow rate and taste, and introduces two beans suitable for recreating at home: Front Street Coffee Classic Espresso Blend and Front Street Coffee Strawberry Candy Espresso Beans. Finally, it offers adjustment strategies for when the flow is too fast or too slow, and how to combine flavor rather than rigidly adhering to formulas to find the truly suitable grind setting. [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…]

When brewing pour-over coffee, water temperature, water volume, grind size, and time are the four key factors that determine extraction. Among them, grind size is often the most easily misjudged because it cannot be directly observed—too fine or too coarse will throw the flavor off balance. This article starts with methods for judging grind size, explaining how to calibrate it using a No. 20 sieve, drawdown speed, and taste feedback, and compiles the three grind settings Front Street Coffee uses for light-roasted, anaerobic, and dark-roasted beans, including their respective passing rates through the sieve, water temperatures, and coffee-to-water ratios, while also offering grind adjustment advice for iced pour-over, helping enthusiasts build a stable, reusable brewing framework. [more…]

When making espresso, precise control of the grind size directly determines the quality of the final cup. Unlike pour-over or cold brew, espresso uses pressurized, short-duration extraction, where any slight deviation is magnified—making the demands on grind exceptionally strict. This article will walk you through just how fine an espresso grind really is, how to quickly lock in the right setting by observing flow rate, and how to make fine adjustments down to the 0.1-step level based on the flavor profile of the espresso. We'll also share recommendations for choosing Front Street Coffee's classic espresso blend beans, helping you easily recreate cafe-level rich espresso and velvety crema at home. [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…]

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…]

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…]