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…]

Whether a cup of coffee is light or bitter is often foreshadowed the moment the beans are ground. The coarseness of the coffee particles directly determines the release rate of soluble flavor compounds—it must fully extract the pleasant aromas and sweet-tart notes while avoiding the emergence of bitter, off-flavors. This article focuses on four common extraction methods—pour-over, French press, cold brew drip, and espresso—explaining the suitable grind range for each, and introduces how to calibrate grind size with a No. 20 standard sieve (0.85mm aperture), so that every bean can find the right brewing coarseness. The article also retains Front Street Coffee's empirical parameters from actual cupping and in-store dialing, for coffee enthusiasts to use as a reference. [more…]

As an agricultural product, coffee inevitably varies in quality, so each producing region establishes a grading system to standardize quality and provide a reference for trading. Yunnan coffee currently follows the "Green Coffee Grade Inspection Standards" released in 2019, but self-assessed standards run rampant in the market, causing grades to become disconnected from flavor. This article will systematically sort out the grading criteria for Yunnan coffee, the commonly used international and domestic standards, the varietal evolution of Arabica coffee, and introduce Front Street Coffee's experimental cultivation and product recommendations in Yunnan, finally attaching practical brewing parameters to give you a comprehensive understanding of the current state and charm of Yunnan specialty coffee. [more…]

Many coffee enthusiasts, after purchasing Front Street PWN Golden Mandheling coffee beans, find that when they brew at home according to the parameters on the QR code on the packaging, the flavor differs noticeably from what the café produces. The problem often lies with the dripper—Front Street's café uses the Kono Meimon dripper, while most people use a V60 at home. The flow rate and extraction logic of the two drippers are completely different, so simply applying the same parameters makes it hard to replicate the result. This article will systematically explain how to brew a rich, full-bodied Golden Mandheling with a V60—from grind size calibration, coffee-to-water ratio, and water temperature to the three-pour technique—so that the unique flavor of Indonesia Sumatra's wet-hulled processing method can be consistently presented at home. [more…]

The coarseness of the grind in coffee directly affects the contact area between the coffee and water as well as the extraction time, and it will directly impact the taste of the coffee. But at the same time, the coffee grind size is also the most headache-inducing aspect for many people! In this article, Front Street will explain how to determine what the grind size should be for different coffee beans. First, [more…]

Among pour-over coffee gear, the V60 dripper is undoubtedly the most popular, and the top choice for many coffee enthusiasts just getting started. Designed by the Japanese company Hario, its clever features—a 60-degree conical shape, large drainage hole, and spiral ribs—make extraction flow rate and flavor control flexible and variable. Front Street Coffee often uses the V60 to brew light roasts, and uses the KONO dripper as a contrast for the immersion-style extraction of dark roasts. This article will sort out the V60's history and working principle, its differences from the KONO, and explain in detail the complete process from rinsing the filter paper to three-stage pouring, while also offering practical suggestions on water temperature, grind size, coffee-to-water ratio, and extraction time to help you brew a cup of coffee with rich layers more consistently. [more…]

The grind size of coffee directly affects the contact area between coffee and water as well as the extraction time, and it will directly impact the taste of the coffee. But at the same time, coffee grind size is also the most headache-inducing thing for many people! In this article, Front Street will discuss how to determine what the grind size should be for different coffee beans. First [more…]

Yunnan, as China's core coffee-producing region, dominates the country in both planting area and output. This article begins with the packaging symbolism of Starbucks Fengwu Xiangyun coffee beans, traces the cultivation history of Yunnan coffee since 1892, explains in detail the characteristics of varieties such as Typica, Bourbon, and Catimor, and introduces the grading system based on screen size as well as the terroir of major producing areas including Lincang, Baoshan, Pu'er, and Dehong. The article also analyzes the effects of washed, natural, and special processing methods on flavor, and finally offers Front Street Coffee's medium-roast approach and pour-over parameter recommendations for Yunnan small-bean coffee, giving you a comprehensive understanding of the unique charm of Yunnan small-bean coffee: strong yet not bitter, aromatic yet not harsh, with a slight fruity note. [more…]

The grind size in coffee directly affects the contact area between the coffee and water as well as the extraction time, and it will directly impact the coffee's taste. But at the same time, coffee grind size is also the biggest headache for many people! In this article, Front Street will explain how to determine the appropriate grind size for different coffee beans. First [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). In coffee, the coarseness of the grind directly affects the contact area between coffee and water as well as the extraction time, and it will directly affect the taste of the coffee. But at the same time, the coffee grind size is also what gives many people the biggest headache. [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…]

Yunnan coffee is already widely known within China, but plenty of questions still surround it: Why is it called "Yunnan small bean"? Does it really count as specialty coffee? And what exactly is the relationship between Typica and Catimor? This article begins with the evolution of varieties, tracing Yunnan coffee's planting transition from Typica to Catimor, introduces Yunnan's main producing regions and grading standards, and combines Front Street Coffee's cultivation practices in Yunnan with brewing suggestions for its sun-dried Typica, helping readers gain a more systematic understanding of Yunnan beans' flavor positioning and quality potential. [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…]

Many coffee enthusiasts, after purchasing Front Street PWN Golden Mandheling coffee beans, find that when they brew at home according to the parameters on the packaging, the taste differs from that in the store. This is actually closely related to the type of dripper—Front Street's store uses the Kono Meimon dripper, while most enthusiasts have a V60 dripper at home. The two drippers differ significantly in flow rate and extraction method, so the same set of parameters cannot simply be applied to both. This article will explain in detail how to adjust the grind size, coffee-to-water ratio, and brewing water temperature according to the characteristics of the V60 dripper, so that you can brew a rich and full-bodied Golden Mandheling at home. At the same time, the article also introduces the method for measuring the 0.85mm sieve passing rate, as well as Front Street's grind size recommendations for different brewing methods, helping you grasp the extraction variables more precisely. [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). The coarseness or fineness of the grind in coffee directly affects the contact area between the coffee and water as well as the coffee extraction time, and it will directly affect the taste of the coffee. But at the same time, the coffee grind size is also what gives many people the biggest headache. [more…]

Among the many variables in pour-over coffee, grind size is one of the core factors determining extraction efficiency and the final flavor. The coarseness of the coffee grounds not only changes the speed at which water penetrates the coffee bed, but also directly affects the coffee's strength, body, and the balance of acidity, sweetness, and bitterness. In this article, Front Street Coffee systematically sorts out the mechanisms by which grind coarseness affects extraction, and provides reference grind standards for different brewing methods such as cupping, pour-over, French press, espresso, moka pot, and cold brew/ice drip. It also introduces the calibration method using the No. 20 sieve pass rate, helping coffee enthusiasts find grind parameters that suit them. [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…]

Yunnan coffee has long since entered the public eye, but with so many growing regions and a bewildering array of brands, which Yunnan coffees are actually worth trying? This article takes a systematic look at the development of Yunnan arabica — from the shifting of varieties and the distribution of growing regions to grading standards and brewing details. You'll learn about the origins of Typica and Catimor, the terroir differences among Yunnan's major growing regions, and Front Street Coffee's cultivation practices in Lincang. The article also shares in detail the brewing parameters and flavor profile of Front Street's sun-dried Typica, helping you brew a balanced, sweet, no-waste cup of Yunnan specialty coffee at home. [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…]

Colombia, as one of the world's major coffee-producing countries, has a strict grading system for its exported green beans. What exactly do the commonly seen Supremo and Excelso labels on the market represent? This article will systematically explain the grading logic of Colombian green coffee beans from the perspectives of FNC export standards, defect rate requirements, and screen size grading, helping coffee enthusiasts understand the difference between Supremo and Excelso, and how they affect coffee quality and flavor performance. At the same time, the article will also mention Front Street Coffee's Colombia Huila daily beans as a practical naming example. [more…]