In the field of coffee brewing, By Pass is a concept that is practiced far more often than it is discussed in theory. Many enthusiasts simply equate it with adding water to dilute brewed coffee, but is this understanding accurate? Starting from the literal meaning of By Pass, this article will systematically explain the underlying logic of the bypass technique in conjunction with the relationship between extraction yield and strength in the Golden Cup standard. It also introduces Kanazawa-style brewing as a reference, analyzing how to use a 1:13 coffee-to-water ratio together with bypass water equal to twice the coffee dose to optimize the acidity and cleanliness of light-roasted coffee, and explores the room for adjusting parameters such as grind size and water temperature. [more…]

In the coffee world, there are always some terms that leave people scratching their heads, and By pass is one of them. Literally translated as "bypass" or "detour," but what exactly does it refer to? Simply put, it describes water that does not pass through the coffee grounds and goes directly into the cup, as well as the corresponding actions. From dilution with water in Americanos, to melting ice in iced pour-over, to concentration adjustment by competition baristas and in daily brewing, By pass is everywhere. Front Street Coffee will guide you through multiple examples to fully understand the active and passive generation of bypass water, its role in extraction, and the prerequisites for its use as a remedial measure, helping you apply this technique more accurately. [more…]

When brewing pour-over coffee, many people have seen baristas add more water to the carafe after finishing the brew. This is actually called "bypass." From the perspective of Front Street, this article systematically explains the principles of bypass, common application scenarios, and emergency rescue methods, including bypass approaches for Americano and iced pour-over, as well as how to use a small amount of bypass water to salvage situations involving standing water in the final stage, excessive strength, or over-extraction. It also covers the choice of bypass water temperature and addition techniques, helping you understand the logic behind this technique, and points out that rather than relying on post-brew dilution, it is better to find the root cause of the brewing problem. [more…]

Grind size is the key variable that determines the direction of coffee flavor, but grinders on the market have wildly varying scales, and the same number may correspond to dramatically different coarseness on different devices. How fine is actually fine? How should you judge something the size of granulated sugar? This article starts from the impact of grind size on extraction, systematically introduces how to quantify the coarseness of coffee grounds with the help of the Chinese standard No. 20 0.85 mm aperture sieve, and for common brewing methods such as pour-over, French press, cold brew, espresso machine, and moka pot, provides reference ranges for grind passing rates under different roast levels and comparison methods, helping you find the grind parameters suitable for your own equipment. [more…]

As in various other industries, there are quite a few professional terms in coffee as well. We can understand so-called professional terms as a condensed expression of complex concepts. They can not only improve the efficiency of our communication, but also increase the precision of communication and reduce the chance of communication barriers arising. However, because most [more…]

Brewing a good cup of coffee makes grind size an unavoidable key variable. If the particles are too coarse, flavor extraction is insufficient; if ground too fine, it easily brings out bitter and off-flavors. But just how coarse counts as coarse, and how fine counts as fine? And how should you convert between different brewing devices? This article uses the industry-recognized cupping standard as its baseline and the No. 20 sieve pass-through rate as a unified ruler, providing reference grind ranges one by one for French press, pour-over, cold brew drip, and espresso machines, explaining how roast level and bean density affect grinding results, and finally including Front Street Coffee's approach to dialing in espresso extraction, helping you turn grind size from "guesswork" into "data." [more…]

Grind size is the key variable that determines the direction of coffee flavor, but how coarse counts as coarse and how fine counts as fine has always lacked a unified standard. This article uses the industry-recognized cupping grind as a baseline, and with the help of the passing rate through a No. 20 standard sieve, quantifies the grind requirements for French press, pour-over, cold brew, ice drip, and even espresso machines one by one, and also includes reference settings for the EK43s grinder. The article also specifically reminds readers that differences in coffee bean density and roast level will cause the same setting to produce different particle sizes, and finally provides Front Street Coffee's espresso extraction plan as a debugging example to help enthusiasts turn grinding from an empirical judgment into a reproducible data-driven operation. [more…]

"Excuse me, what grind size should I use for pour-over coffee?" "Why is the grind at setting 10 on your machine different from setting 10 on mine?" "When you say 'sugar-like,' do you mean caster sugar, granulated sugar, or brown sugar?" ... Are you still struggling to find the right grind size for your coffee brewing device? Front Street has an article to [more…]

Grind size is one of the core variables determining the extraction outcome and flavor direction of pour-over coffee. This article systematically examines how coffee particle size affects flow rate and extraction efficiency, compares the typical behaviors when the grind is too fine versus too coarse, and provides reference grind ranges for different brewing devices such as cupping, pour-over, espresso, moka pot, cold brew drip, and French press. It also introduces the calibration method using the No. 20 sieve pass-through rate to help you find the appropriate grind setting between medium-light and medium-dark roasted beans. The article also incorporates Front Street Coffee products such as Huakui, Geisha, Sidra, PWN Golden Mandheling, Queen's Estate, and Blue Mountain No. 1, offering corresponding grind recommendations and extraction approaches. [more…]

For pour-over coffee enthusiasts, grind size is often the trickiest variable to master. Starting from the industry-recognized cupping standard, this article explains how to precisely calibrate grind size with the help of a No. 20 standard sieve, and analyzes in detail the differences in brewing performance caused by grinding too fine and too coarse. It also presents the practical calibration method recommended by Front Street Coffee, explains the sieve-passing rate ranges that coffee beans of different roast levels should match, and shows how to flexibly adjust the grind by observing the flow rate during brewing, helping you reproduce coffee flavors more consistently in your daily brewing. [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…]

Recently, a netizen complained on social media that Manner Coffee's pay-raise assessment system is too strict, claiming that to earn the high salary advertised on its recruitment page, one must pass exams comparable in difficulty to SCA intermediate or even advanced barista certification, which resonated with many baristas. What kind of assessment threshold lies behind Manner's high pay? Compared with other brands, what makes its promotion system so difficult? This article takes you through it. [more…]

Grind size is one of the core parameters determining the success or failure of coffee extraction, but the coarseness of coffee grounds is difficult to describe with intuitive numerical values, so sieve passing rate has become a more precise way to communicate. In this article, Front Street will systematically sort out the suitable grind levels for pour-over, cold brew (cold immersion and ice drip), French press, clever cup, moka pot, and espresso machine, and provide specific passing rate references for the No. 20 Chinese standard sieve. Whether you are a beginner who has just started or a veteran player looking to calibrate your grind, you can find corresponding parameter suggestions here. The article also specifically explains the differences between medium-light roast and medium-dark roast pour-over, adjustment methods for iced pour-over, and the reason why cold brew grind is not finer-is-better, helping you avoid common pitfalls and brew a full-flavored good cup of coffee. [more…]

When making iced pour-over coffee, should the coffee liquid be allowed to pass through the ice or not? This is a question that many coffee enthusiasts struggle with. Many cafés do indeed use the ice-passing method for serving, but passing through ice also has obvious shortcomings, such as the coffee warming up quickly, not being cold enough, and the degree of dilution being difficult to control. To solve these problems, the key is to start from three aspects: the degree of cooling, pre-treatment of the cupware, and parameter adjustment. Based on the practical experience of Front Street Coffee, this article breaks down in detail the precautions for the ice-passing method and gives specific suggestions for coffee dose, coffee-to-water ratio, grind size, water temperature, and extraction time, helping you consistently make delicious iced pour-over at home. [more…]

Grind particle size is one of the key variables that determines the direction of coffee flavor. Starting from the practices of Front Street Coffee, this article systematically reviews the influence of grind size on extraction efficiency in pour-over coffee, the grind standards suited to medium-light and medium-dark roasts respectively, and how to use a 0.85mm No. 20 sieve to test the pass-through rate. It also extends to the extremely fine grind requirements of espresso, explains the effect of the grinder burr spacing on extraction time, and provides the specific extraction parameters and flavor description of Front Street espresso. In addition, the article also explains the relationship between the choice of Moka pot coffee grounds coarseness and the oils it produces, helping coffee enthusiasts find a grind plan suitable for their own equipment at home. [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…]

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…]

Grind size plays a pivotal role in pour-over coffee, directly influencing flavor presentation and extraction efficiency. This article uses Ethiopian Sidamo Candlestick (natural process, light roast) as a sample, adopts the brewing framework recommended by Front Street Coffee, and conducts a segmented extraction comparison across three different grind sizes—BG-5I (75% passing a No. 20 sieve), BG-5T (58% passing), and BG-7D (43% passing). The results show that too fine a grind lets bitterness suppress the tropical fruit notes; the medium-fine BG-5T releases citrus, mango, nectarine, and creamy aromas more fully, with a full body and pronounced sweet aftertaste; while the coarser BG-7D underextracts, yielding a thin flavor. The article ends with some tips on pour-over extraction stages and water temperature control for coffee enthusiasts' reference. [more…]

Many coffee enthusiasts often feel that their brews don't taste as good as those in cafés, but the problem often lies in the grind size. Extraction yield and concentration are affected by four factors: grind, ratio, time, and water temperature—and among these, only grind size cannot be precisely judged by the naked eye. To help everyone find the right grind coarseness, Front Street shares three practical methods: measuring the passing rate with a No. 20 sieve, observing the flow rate and extraction time, and tasting the flavor to work backward and adjust. The article also gives specific grinding recommendations and passing rate references for beans of different roast levels, and retains Front Street's brewing parameters and product examples. [more…]