At the Amederaro processing station, perched at 2,200 meters above sea level, an Ethiopian coffee bean known as Front Street Amederaro is born. It undergoes anaerobic slow drying: after harvesting, only fully ripe cherries are carefully selected and slowly fermented in an oxygen-free environment, ultimately revealing a complex flavor profile with top notes of passion fruit, interwoven with honey and champagne nuances, a full-bodied juice-like mouthfeel, and a subtle hint of rose tea. This bean clinched consecutive victories in the 2019/20 TOH national competition and the African regional finals, rightfully earning the title of "Double Champion." Meanwhile, the Worka cooperative in the Yirgacheffe region has also introduced an anaerobic natural batch, offering a refreshing blend of floral notes with mango and lemon, perfect for summer enjoyment. This article will thoroughly dissect the processing techniques, flavor dimensions, and competition background of Amederaro, along with recommendations for other specialty-processed beans from the same region. [more…]

Many friends who have drunk red wine should be all too familiar with one step in wine tasting: decanting. After a period of decanting, the astringency of the tannins weakens slightly, and the sweet and sour notes in the red wine become more lively. Drinking coffee is actually quite similar to drinking red wine—red wine needs decanting, while coffee beans need resting. [more…]

Friends who are just getting into specialty coffee often hear the terms "resting beans" and "awakening beans." What exactly do they mean, and how are they related to each other? Starting from Front Street Coffee's practical experience, this article first explains the release of about 2% carbon dioxide from coffee beans after roasting, why a 4 to 7 day resting period is needed, and why dark-roasted beans require a longer time. Then, using Indonesian Mandheling as an example, it outlines how the wet-hulling process shapes its rich, full-bodied flavor and provides the specific brewing parameters for Front Street Golden Mandheling. Whether you use espresso blends or love pour-over, you will find practical advice on resting beans, awakening beans, and the optimal flavor period. [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…]

In coffee roasting, understanding green bean characteristics is the foundation for developing a roasting strategy. Starting from the Front Street Coffee roasting course, this article provides a detailed analysis of how the three key indicators of green beans—moisture content, density, and size—affect heat transfer and flavor development, and systematically introduces the causes and harms of common defective beans such as shell beans, insect-damaged beans, moldy beans, black beans, and white-eye beans. Mastering this knowledge helps with proper screening and adjustment before roasting, ensuring the final coffee flavor is clean and rich. [more…]

The freshness of coffee beans directly determines the upper limit of the flavor in your cup. Starting from practical buying tips, this article teaches you how to tell whether beans have absorbed moisture or oxidized by squeezing them by hand, chewing them, and smelling their aroma, and explains why freshly roasted beans need to rest for a week before being brewed. At the same time, the article also introduces the consistency differences between single-origin beans and blend beans in terms of particle size and color, as well as the spoilage signal indicated by oil appearing on light-roast beans. In addition, the article lists common types of defective beans, including fermented beans, dead beans, black beans, insect-bored beans, and broken beans, to help you quickly screen out high-quality coffee beans by appearance. It is recommended to buy only as much as you can consume within half a month, and the related products from the Front Street Coffee brand are also worth paying attention to. [more…]

Friends who often follow Front Street should know that Front Street focuses on freshly roasted coffee. Freshly ground coffee is not the same as fresh, and of course, the fresher the better is not always true. Front Street generally provides coffee beans that are two to three days past the roast date. Coffee beans that have rested for a few days can better express their true flavors when brewed. Front Street not only offers single [more…]

Coffee enthusiasts often ask in the shop exactly what the difference is between Ethiopia's G1 and G2, what Kenya AA actually means, and what Costa Rica's SHB grade signifies. These combinations of letters and numbers actually reflect how each producing country evaluates the quality of green coffee beans. Due to differences in history, trade, climate, and terrain, different origins have developed their own grading systems, with evaluation criteria covering multiple dimensions such as defect percentage, bean size, growing altitude, green bean density, and processing method. This article will systematically sort out the origins of coffee grading and introduce, one by one, the green bean grade standards of representative producing countries such as Ethiopia, Kenya, Colombia, Jamaica, Costa Rica, Panama, Guatemala, El Salvador, Honduras, and Brazil. [more…]

To make espresso with rich crema and a full-bodied mouthfeel, the key lies not only in the machine, but even more in the bean blend recipe and roast level. Front Street Coffee has long insisted on fresh roasting, offering coffee beans that have been rested for two to three days so the flavors are fully released. This article systematically compiles six Front Street espresso blend options, covering balanced, bitter, acidic, winey, specialty, and basic styles, and explains in detail parameters such as the coffee-to-water ratio, grind size, and extraction time. It also shares key points for selecting blend beans: removing defective beans and understanding the differences in bean variety characteristics and roast levels. Whether you are a coffee enthusiast or a shop operator, you can find an espresso bean solution and extraction approach suitable for daily serving. [more…]

From fruit to export, coffee beans must undergo a series of meticulous processing steps, and these processes directly determine the final quality and price of the coffee. This article systematically reviews the coffee bean processing methods of major producing regions around the world: from the dry method commonly used in Brazil and Ethiopia, to the wet method widely adopted in Kenya, Colombia, and elsewhere, and then to the subsequent stages of hulling, polishing, grading, and sorting. The article introduces in detail the technical key points, equipment principles, and quality control essentials of each step, and analyzes the impact of different processing methods on coffee flavor and commercial value. It is suitable for enthusiasts who wish to gain a deeper understanding of green coffee bean processing knowledge. Front Street Coffee always pays attention to the influence of origin processes on flavor, providing coffee enthusiasts with professional bean selection references. [more…]

Coffee enthusiasts who often pick freshly roasted coffee beans at FrontStreet Coffee know that the optimal flavor period for coffee beans is within one month, while for drip bag coffee it is half a month; does this mean that just-roasted coffee beans are at their freshest? This [more…]