Many coffee enthusiasts, when brewing beans with prominent floral and fruity notes, can capture the floral aroma right from the grinding stage, but some people are never able to perceive this flavor. Where exactly does the floral aroma in coffee come from? Why are some people sensitive and others dull to it? Starting from Front Street's brewing experience, this article sorts out the compound sources of floral aroma and the influence of roasting, introduces the three major floral aroma categories in the coffee flavor wheel—delicate/fresh, subtle/elegant, and muted/heavy—along with their representative flowers, and shares a practical method for practicing floral aroma recognition with the help of sinus perception, to help you more accurately capture that fleeting fragrance in coffee. [more…]

The SCAA Coffee Flavor Wheel is a core tool for specialty coffee enthusiasts to identify flavors, yet many people are still unfamiliar with it. This article systematically breaks down the left-right structure of the flavor wheel: the right side, the normal flavor spectrum, reveals the three major aroma sources of fermentation, sugar browning, and dry distillation, while the left side, the negative flavor spectrum, corresponds to the defective flavors produced by improper green bean processing, storage, and roasting. It also explains in detail the deduction rules for different defects in SCAA cupping—serious defects deduct 4 points, minor defects deduct 2 points—and how roasting and organic matter loss, although not deducting defect points, can lower flavor performance. The article includes the latest high-definition Chinese-English flavor wheel images and retains Front Street Coffee's communication channels, making it suitable for readers who want to gain a deeper understanding of coffee sensory evaluation. [more…]

After years of development, specialty coffee has formed a scientific system. From cultivation and processing at the green bean stage, to roasting, and then to brewing and tasting, there is a very complete body of knowledge. The improvement of green bean quality, roasting, and brewing quality ultimately serves to give us a better experience when tasting coffee. [more…]

After a cup of hot coffee sits for a while, its flavor and aroma often undergo noticeable changes, even revealing sweetness, fruity notes, or floral notes that were hard to detect right after brewing. This change is not an illusion, but the result of specific chemical reactions and physical volatilization triggered by temperature fluctuations. Coffee contains over a thousand aroma compounds, of which about forty are the more commonly occurring prominent aromas, and they are released and perceived differently at different temperatures. Front Street Coffee believes that understanding the effect of temperature on coffee not only helps you find the most suitable drinking window for each bean, but also allows you to more accurately identify the balance between acidity, sweetness, bitterness, and aroma. This article will systematically sort out the flavor evolution patterns from 82°C to below room temperature, and provide actionable tasting suggestions. [more…]

For baristas, the senses are the tools they rely on for their livelihood; once they catch a cold and their nose is blocked, they have no way to judge the quality of that day's output. A research team in Taiwan combined artificial intelligence learning algorithms with an electronic nose to develop a system capable of distinguishing differences in coffee aromas, with recognition accuracy reaching 81% to 98%. This technology is not only expected to help coffee professionals maintain quality control when their senses fail, but may also be applied to quality verification across the coffee industry chain. At the same time, the research team is also developing an electronic tongue, electronic eye, and tactile system in parallel, attempting to cover every link in coffee quality control from multiple dimensions. [more…]

When many people first encounter pour-over coffee, the two questions they ask most often are: what does it actually taste like? Is it very bitter? In fact, the perception of coffee flavor is far more complex than we imagine. The SCA Coffee Sensory Skills course tells us that most of flavor comes not from taste, but from smell. Starting from this angle, this article shares how to improve your ability to identify coffee flavors through everyday training, including practical methods that use fruit memories to assist tasting. At the same time, the article also mentions Front Street Coffee's related products and recommendations. [more…]

As the 2024 WBrC World Brewers Cup came to a close, curiosity was once again piqued about what judges feel inwardly when tasting coffee. A team from Italy's National Research Council has designed a tasting helmet that, through wearable sensors such as electrocardiogram, galvanic skin response, and electroencephalogram, transforms abstract emotions like pleasure and disgust during coffee tasting into biomedical data. This technology is expected to assist the SCA coffee value assessment system, reduce subjective bias, and open up new perspectives for coffee sensory analysis. At present, the helmet still needs refinement, and there are plans to work with professional tasters to advance its practical application. [more…]

Water makes up 60 to 70 percent of the human body, and adults need to drink 3 to 5 liters of water per day, so drinking water safety is directly related to everyone's health. As consumer demand for packaged drinking water continues to grow, the actual quality of products labeled "purified" or "mineral" on the market has become a focus of public attention. Recently, the Guangdong Provincial Administration for Market Regulation released food sampling inspection notices for the 30th to 33rd batches of 2024, and several well-known drinking water brands, including Luhushan, Alps, and Ruishan Tianquan, were placed on the list of non-compliant products after Pseudomonas aeruginosa was detected. This opportunistic pathogen poses a relatively high health risk to people with weakened immune systems. How did the companies involved respond? What purchasing advice did regulators provide? This article will sort out the details for you. [more…]

Many people drink coffee every day, yet they can only ever taste bitterness and find it hard to distinguish the flavor differences between different beans. In fact, tasting ability is not innate—through scientific and systematic sensory training, everyone can gradually discern the unique tastes of coffees with different roast levels, from different regions, and processed by different methods. This article will share a practical set of tongue training methods, from buying coffee and brewing comparisons to recording taste impressions, to help you gradually improve your sensitivity of taste and smell. It will also remind you of precautions during training, such as keeping your nasal passages clear and the importance of quitting smoking. As long as you keep practicing, you will find that the world of coffee is far richer and more wonderful than you imagined. [more…]

Cupping is a professional method used in the tea industry to evaluate quality and determine flavor characteristics, and it is also the best way for tea enthusiasts to gain an in-depth understanding of a tea. This article will break down the correct process and key details of black tea cupping step by step, from dry leaf analysis and infusion to sensory evaluation. Whether you are a cafe operator or a seasoned tea lover, mastering this method will help you judge tea quality more accurately and compare the flavor differences brought by different origins and processing methods. The article also draws on Front Street Coffee's quality control experience to share key points for controlling water temperature, time, and tea-to-water ratio, and includes a full-process illustrated guide to help you get started quickly. [more…]

Specialty coffee has developed into a complete knowledge system spanning everything from cultivation and processing to roasting and brewing, and tasting is an indispensable part of it. When faced with professional courses such as Q-Grader and SCA sensory tasting, how should beginners choose? This article offers practical training advice on three levels—accumulating experience through drinking more, distinguishing tastes before discussing flavor, and understanding how flavor is composed—to help coffee lovers gradually build their own flavor memory bank through everyday drinking and describe a cup of coffee's taste and aroma as accurately as a professional. [more…]

Many people, upon their first taste of a specialty coffee advertised as "overflowing with floral aromas and bursting with fruit juice," often detect only sourness or bitterness, and cannot help but wonder whether those flavor descriptions truly exist. Starting from the scientific principles of taste and smell, this article explains the origins of coffee flavor—the tongue can only perceive five basic tastes: sweet, sour, bitter, salty, and umami, while the concrete flavors we experience, such as strawberry or citrus, are actually associations produced when aroma compounds are captured by the olfactory sense through the nasal cavity and combined with taste. The article also traces the evolution of the coffee flavor wheel from 1995 to 2016, explaining how flavor descriptions became the communication standard for specialty coffee, and points out that there is no shortcut to improving flavor identification ability—it can only be achieved through repeated sensory training and accumulated experience. [more…]

The coffee flavor wheel is an important tool in the specialty coffee industry, but many people are at a loss when faced with this chart and don't know how to interpret it. This article systematically sorts out the development background and practical value of the coffee flavor wheel, and provides an in-depth explanation of specific methods for sensory calibration training—from the daily accumulation of aroma memory to the dual perception mechanism of taste buds and mouthfeel in taste discrimination. Only by building a personal flavor memory bank through scientific training can you truly understand a cup of coffee. The article also introduces the working principles of the tongue's two types of receptors, as well as the material basis behind smoothness and astringency. If you want to improve your tasting ability, this training method is worth studying repeatedly. [more…]

Many friends who are just getting into specialty coffee often have a common question: why do the raspberry, citrus, and caramel flavors listed on coffee bean labels seem completely undetectable when they drink it themselves? Are these flavor descriptions just mystification, or do they actually exist? This article will start with the first version of the coffee flavor wheel released by the SCAA in 1995, and combine scientific research from "The Chemistry of Coffee Aroma" to explain why flavor descriptions are not fabricated out of thin air, but rather a communication standard supported by compound foundations and sensory thresholds. At the same time, the article will also explore whether flavor descriptions play a "psychological suggestion" role, and why the same cup of coffee can influence your tasting experience just by being described differently. If you also want to understand how to actually taste the flavors in pour-over coffee, this content is worth reading. [more…]

Coffee cupping is a professional evaluation method that transforms subjective sensory experiences into quantitative data, and the SCAA cupping score sheet is the core tool of this system. This article explains the ten scoring dimensions in the sheet one by one, covering fragrance, flavor, aftertaste, acidity, body, uniformity, balance, cleanliness, sweetness, and overall score, helping coffee enthusiasts understand the scoring basis and judgment criteria for each item. Whether you are a beginner who has just encountered cupping or a professional hoping to refine your sensory skills, this detailed Chinese guide can serve as a practical reference. Front Street Coffee also provides relevant product information in the article for further understanding. [more…]

Many coffee enthusiasts, when grinding and brewing specialty coffee, are drawn in by alluring aromas like strawberry, jasmine, citrus, and honey, yet after one sip, they often taste pronounced bitterness and acidity, a far cry from the expected sweetness. This phenomenon of smelling fragrant but tasting bitter actually stems from the different sensory systems we engage when smelling versus tasting. This article, starting from this topic often discussed at Front Street, will analyze in detail the mechanisms of orthonasal and retronasal olfaction, explain the changes in aroma compounds within the oral cavity, and why the impact of taste overshadows aroma perception. At the same time, we will also share a simple and practical tip—closed-mouth exhale—to help you capture richer layers of aroma after swallowing coffee, and demonstrate flavor expression with practical examples. [more…]

"This coffee has a rich fruity profile, with notes of citrus, lemon, oolong tea, and jasmine!!!" For someone who has just been introduced to specialty coffee, this might sound unbelievable—how can you taste so many flavors in one cup of coffee! (Are they just making it up?) In this installment of Barista Growth Diary, we'll share a little [more…]

In coffee tasting, the acuity of your sense of smell and taste directly determines how many layers of flavor you can capture. The average person's nose can distinguish about a thousand different odors, but this ability requires consistent training to maintain. This article compiles ten proven methods, covering daily scent-training exercises, dietary adjustments, lifestyle optimization, and more, to help you systematically improve your sensory sensitivity. Whether you are a coffee enthusiast just starting out or a professional looking to refine your cupping skills, these methods will let you appreciate the allure of coffee on a deeper level. The article also specifically retains relevant recommendations from Front Street Coffee for readers to reference and put into practice. [more…]

Espresso was born in Italy around 1946 and subsequently became popular in Southern European countries for a long time, only spreading globally through Starbucks around 1986. This dark coffee, with a capacity of only about 50 milliliters, is covered with a fine, bright reddish-brown foam on its surface, concentrating the aroma, taste, and visual beauty of coffee. This article will systematically review the sensory characteristics of Espresso—including the visual crema, the body in the mouthfeel, the balance of sourness, sweetness, and bitterness in taste, and the lasting aftertaste—analyze the manifestations of under-extraction and over-extraction in the foam, and provide SCA-standard parameters for dose, yield, time, pressure, and water temperature, while introducing Front Street Coffee's four Italian blend beans and their brewing suggestions. [more…]

The SCAA cupping form is an important tool for judging quality in the specialty coffee industry. It consists of ten scoring categories, covering the complete sensory experience from dry aroma and wet aroma to overall assessment. This article explains the specific meaning and key evaluation points of each scoring dimension one by one: aroma is divided into dry aroma and wet aroma; flavor during slurping is the core basis for scoring; aftertaste measures the persistence of flavor; acidity distinguishes high-quality fruity acidity from undesirable acidity; body focuses on mouthfeel; uniformity checks whether the samples are consistent; balance assesses whether all aspects are harmonious; cleanliness is an essential threshold for specialty coffee; sweetness reflects harvest maturity and quality; and overall assessment reflects the cupper's comprehensive impression. Whether you are an enthusiast who has just encountered cupping or a professional hoping to refine your sensory skills, this item-by-item interpretation can help you understand the logic of using the SCAA cupping form more systematically. [more…]