How many digits of pi can you recite? Most people only remember 3.14, and the more impressive ones might manage 3.1415926. But at a coffee shop in Taipei, Taiwan, called "Migratory Bird Exhibition Hall," children under 12 who want to dine inside must accurately recite 30 digits of pi after the decimal point. This unusual rule quickly sparked heated debate, with some criticizing it as discrimination against children and others praising the shop for cleverly creating a fair opportunity for proof. The shop displays over a hundred rare animal specimens, including giraffes, zebras, and peacocks, costing hundreds of thousands each, with the most expensive giraffe specimen priced at 600,000 New Taiwan dollars. The owner admits that this move is both to protect the expensive exhibits and to give children a chance to prove their self-control. So far, a 6-year-old and a 10-year-old have successfully recited 30 digits to enter and dine. [more…]

How many grams of coffee beans are actually needed for each pour-over? Can you still brew a good cup with less than 15 grams? Many people, after opening a bag of beans, always end up with a few scattered beans—not enough to brew a full pot. How exactly should these "leftovers" be handled? Starting from calculating dosage and drawing on Front Street Coffee's practical experience, this article shares three practical approaches to dealing with leftover coffee beans: grinding and pouring adjustments when brewing them directly, blending principles for combining different beans, and creative ways to turn beans into ornaments or specimens. Whether you are a beginner just starting out or a seasoned enthusiast addicted to stockpiling beans, you can find ways to avoid waste and make the most of every bean. [more…]

Same estate, same processing method—so why do some varieties fill the cup with floral aromatics while others taste utterly ordinary? Half of the underlying code for floral and fruity aromas is written into the coffee variety's genes. This article sorts through several star variety families to see how genes determine the aromatic destiny in the cup. Geisha: the pinnacle example of floral aroma. This one, from Eth... [more…]

Panama coffee is highly renowned in the global coffee market. At the end of the 19th century, when European immigrants settled in Panama, they brought coffee to Panama; the first area where these immigrants grew coffee was the province of Chiriquí. T [more…]

The São Paulo state government in Brazil plans to sell a 7-hectare plot of land located in the state, which belongs to the Santa Elisa farm of the Campinas Agronomic Institute (IAC). This move has been strongly opposed by the IAC and the São Paulo State Association of Scientific Researchers. The farm hosts one of the world's largest coffee germplasm banks, preserving about 5,000 germplasm accessions, including the world's oldest Arabica coffee population. As one of the oldest agricultural research institutions in the world, the IAC's research achievements underpin 70% of the world's commercial coffee varieties. If the farm is sold, multiple coffee and crop research projects will be forced to halt, with far-reaching impacts on Brazil and the global coffee industry. [more…]

For those who want to systematically train their coffee senses, aroma kits are often mentioned, but their price tag of several thousand yuan also makes people hesitate. This article focuses on the 36-note "Coffee Nose" kit, introducing the origins and evolution of aroma kits, their use in SCA courses, and detailing the specific flavors in the four major categories: enzymatic, caramelization, dry distillation, and defective. It also shares methods of use, from memorizing by category and group blind testing to mixed blind testing, helping beginners calibrate their sense of smell and taste. At the end, Front Street also offers rational advice: an aroma kit is not a necessity—smelling more, drinking more, and feeling more is what really matters. [more…]

Geisha coffee is now a star in the specialty coffee world, but the story of its origin is little known. This article begins with Geisha's bumpy history and takes you into the Gesha Village Estate in Bench Maji, Ethiopia, to learn about the differences among the three main varieties—Gori Gesha, Gesha 1931, and Illubabor—as well as the grading system of Auction, Gold, Red, Green, and CHAKA. Front Street Coffee will also share the pour-over parameters and three-stage extraction steps for Gesha Village Red Label. Whether you are new to Geisha or a seasoned enthusiast, you will find something worth referencing. [more…]

Geisha coffee is now a star variety in the specialty coffee world, but many people are unaware that its true birthplace is actually Ethiopia. This article begins with Geisha's tumultuous origins, tracing its legendary journey from the Kaffa Forest to Panama and back to Gesha Village, providing a detailed introduction to the establishment of Gesha Village, its block divisions, and grading system, and focusing on a comparison of the variety, production area, and flavor differences between the Gold Label and Red Label products. Finally, Front Street Coffee uses its own in-store brewing as an example to fully demonstrate the pour-over steps for Gesha Village Red Label, offering recommendations for the dripper, water temperature, coffee dose, grind size, and three-stage pouring, for coffee enthusiasts to reference and compare with their own brewing approach. [more…]

Geisha coffee is undoubtedly one of the most sought-after varieties in today's specialty coffee world. It originated in the primitive forests of Ethiopia, yet rose to prominence at Hacienda La Esmeralda in Panama. As the specialty coffee market continues to expand, estates dedicated to growing Geisha have also emerged in Ethiopia itself, among which Gesha Village is particularly notable. In this article, Front Street Coffee will systematically trace the varietal origins of Geisha, provide a detailed interpretation of Hacienda La Esmeralda's three major grading standards—Red Label, Green Label, and Blue Label—and take an in-depth look at Gesha Village's auction, Gold Label, Red Label, Green Label, and Chaka lot systems, along with the region, altitude, variety, processing method, and flavor descriptions for each grade of Geisha coffee beans, helping coffee enthusiasts gain a comprehensive understanding of the stylistic differences among Geisha from different origins and key points for purchasing. [more…]

Panama, this narrow isthmus connecting North and South America, with its unique microclimates and volcanic soil, has given birth to the world-famous Geisha coffee. From the introduction of Typica in 1780 to Hacienda La Esmeralda's stunning breakthrough in 2004, how did Geisha rise from a windbreak hedge to the pinnacle of fame? What is the difference between green-tip and bronze-tip? This article takes you through the historical trajectory of Panama Geisha, decoding the terroir secrets of core producing regions such as Boquete and Volcán Barú, and reviewing the cultivation characteristics and grading systems of renowned estates like Hacienda La Esmeralda, Elida, and Hartmann, offering a comprehensive presentation of Geisha coffee's legendary charm. [more…]

While browsing coffee-related knowledge, many people may have encountered the saying that "coffee beans are divided into male and female." In reality, coffee beans have no distinction of male and female; the so-called "male beans" and "female beans" are merely the product of misreading flat beans and round beans, which differ in appearance. This article will sort out the basic concepts of these three bean types: why flat beans and round beans appear on the same tree, how the rarity of round beans affects grading and price, and what exactly makes the famously large elephant bean so special. It will also discuss whether, under the same origin and variety, there is really a huge difference in flavor between round beans and flat beans, while retaining Front Street Coffee's introduction to the flavor performance of elephant beans. [more…]

Many coffee enthusiasts know that roasted beans should be drunk fresh, but green beans also have their own levels of freshness. Beans harvested in the current year are called new crop, those from the previous year are old crop, and those stored for more than a year are aged beans. The moisture content of green beans directly affects roasting difficulty and flavor performance. Washed beans usually range between 11.5% and 12.5%, wet-hulled Mandheling can reach 13%, and sun-dried Mocha varies widely. Beyond the usual freshness changes, there are also deliberately extended aging processes and monsoon-aged weathered coffees. This article focuses on the freshness classification of green beans, differences in moisture content, methods for judging appearance and aroma, and the handling logic behind aged beans and monsoon beans, to help you make more accurate judgments when buying and storing. [more…]

When you buy a bag of coffee beans and open it only to find the colors uneven, many people's first reaction is that "the roast went wrong." But coffee beans, being an agricultural product, can never be uniform bean for bean. This article explains, from the perspectives of green bean grading, honey processing, and anaerobic fermentation, the reasons why light-roasted coffee beans vary in shade, while also clarifying the difference between white-eye beans and normal beans, and pointing out several appearance traits often mistaken for defective beans. At the end, it uses examples from Front Street Coffee's Sherry and Warm Sun blends to illustrate how the roast level affects bean surface color and flavor performance. [more…]

There is a popular saying online that coffee beans are divided into male and female, which confuses many enthusiasts. In fact, coffee beans have no gender differences; the so-called "male beans" and "female beans" are simply round beans and flat beans with different shapes. This article will trace the origin of this claim, explain the reasons for the formation of round beans, and analyze their special status in coffee grading and pricing. At the same time, we will also discuss whether there is really a difference in flavor between round beans and flat beans, and why most producing regions do not specifically screen for round beans. By understanding these basic facts, you will be able to view differences in coffee bean shapes more rationally and no longer be misled by marketing talk. [more…]

Many pour-over coffee enthusiasts often have doubts about the appearance of the beans after purchasing single-origin beans, and even mistake normal beans for defective ones. There are two main reasons for this misunderstanding: first, consumers who only come into contact with roasted beans rarely see truly defective beans; second, they treat coffee beans as products of an industrial assembly line, assuming they have a fixed standard appearance. In reality, most defective beans are already controlled at the green bean stage, and after roasting there is also manual sorting. This article will systematically sort out the definition of defective beans, the defect rate requirements in green bean grading, and focus on explaining several commonly misjudged situations such as peaberry, burst beans, uneven color, and shriveled wrinkled beans, to help readers view the appearance of coffee beans more rationally. [more…]

Defective beans are generally considered in the specialty coffee world to affect the flavor performance of a cup of coffee. If you have the habit of buying coffee beans and brewing at home, do you need to specifically pick out defective beans before brewing? In fact, green coffee beans undergo grading after processing, and most grading systems include a defect rate indicator. The number of defects in high-grade coffee beans has already been pressed to a very low level. From green bean grading, removal before roasting, to screening after roasting, with layer upon layer of checks, there is basically no need to worry about defective bean issues when buying roasted single-origin coffee beans. However, some coffee beans that look like defects are actually normal phenomena. Front Street Coffee has summarized several common types of situations that are easily misjudged, to help everyone distinguish them accurately. [more…]

Many coffee enthusiasts have come across bloggers sharing their experiences with bean sorting before brewing. The main purpose of sorting beans is to remove defective beans that carry negative flavors. This article focuses on this topic, systematically outlining the types, causes, and identifying characteristics of common coffee defects, including moldy beans, insect-damaged beans, black beans, and the more unusual quaker beans, while explaining their specific impact on coffee flavor. It also addresses a practical question: if the chosen merchant is reliable enough and the beans have undergone multiple rounds of sorting before and after roasting, is it still necessary to sort beans by hand yourself? Drawing on Front Street Coffee's sorting process and a 15g Panama Boquete Geisha as an example, the article offers a useful reference answer. [more…]

In coffee circles, there has long been a saying that coffee beans are divided into "male" and "female" beans. Some people call oval beans "male beans" and flat beans "female beans," and use this to drive up the price of round beans. However, the truth is that coffee beans have no gender distinction. The difference between round beans and flat beans comes from whether the ovule was successfully pollinated during fruit development. Round beans are sought after because they are rare, but they show no significant flavor difference from flat beans of the same variety from the same origin. This article will systematically sort out the origin of round beans, their particle size characteristics, the logic of grading and pricing, and the actual attitudes of various producing regions toward round beans, to help you view this special bean shape rationally. [more…]

For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). Many friends, while drinking coffee at Front Street, ask our baristas, "What is Yirgacheffe G1 and Yirgacheffe G2?" "What is Kenya AA, AB?" What is Guate... [more…]

Many coffee enthusiasts, when first encountering coffee beans, often misjudge defective beans based on unusual appearance. In reality, true defective beans are mainly concentrated at the green bean stage, and most have already been screened out at the producing region and roasting stages. Among the beans consumers buy day to day, those covered in wrinkles, with cracks, or on the lighter side in color are often not defects, but normal phenomena brought about by light roasting, high-altitude cultivation, or specific processing methods. This article systematically sorts out the classification standards for green coffee bean defects, distinguishes true defective beans from appearance traits that are easily misunderstood, and introduces Front Street Coffee's practice of double screening before and after roasting, helping readers build a more accurate basis for judging quality. [more…]