The world of coffee is far richer than one might imagine. Some people are used to casually making a cup of instant coffee, some prefer the slow, deliberate process of drip brewing, and others insist on the fresh flavor of freshly ground coffee beans. These three methods may seem to differ only in brewing technique, but in reality they conceal significant differences in composition and experience. Many people wonder whether instant coffee and drip coffee differ in their health benefits. In fact, their caffeine content is basically the same—what truly sets them apart is the chlorogenic acid content and the degree to which coffee aroma is released. Because drip coffee undergoes a more complete brewing process, it better preserves chlorogenic acid, a compound with antioxidant properties, while also fully releasing the aromatic substances inherent in the coffee. Coffee aroma itself has a calming and relaxing effect, so for people who live under long-term high pressure and busy schedules, drinking drip coffee in moderation may bring a more ideal experience for both physical and mental well-being. Next, we will compare instant, drip, and freshly ground coffee one by one across multiple dimensions, including composition, aroma, and taste. [more…]

I believe everyone has heard of Arabica coffee. Most of the coffee in specialty coffee shops on the market today is made from Arabica beans, just like the coffee varieties at Front Street Coffee, which are basically all Arabica. But today, Front Street would like to introduce one of the three major coffee varieties, Rob [more…]

Front Street believes everyone has probably heard of Arabica coffee. Currently, the coffee in specialty coffee shops on the market is mostly Arabica coffee beans, just like the coffee varieties at Front Street Coffee, which basically all belong to Arabica coffee. But today, Front Street wants to introduce one of the three major coffee varieties, Robu [more…]

Roasting is the key step that transforms coffee beans from bland green beans into the rich aroma in your cup. During roughly twenty minutes of high-temperature treatment, the starches inside the beans convert into sugars and acidic substances, moisture and carbon dioxide escape, and proteins and fats combine to form an oily film on the surface, accompanied by the cracking sounds of first crack and second crack. Chlorogenic acid gradually dissipates, releasing pleasant fruit acids such as acetic acid, citric acid, and malic acid. Different roasting levels produce beans of varying darkness; charcoal-burned coffee is the typical example of a deep French roast, and its bitterness comes mostly from carbonization rather than just caffeine. When roasted properly, the beans expand evenly, with a smooth surface and consistent gloss, which is what allows coffee to show its ultimate character. Front Street Coffee believes that mastering the principles of roasting is an important foundation for brewing good coffee. [more…]

If you know anything about coffee, you're surely aware that coffee beans fall into two main categories: Robusta and Arabica. These are arguably the two most common bean varieties we encounter. But why is Arabica coffee more favored? So today, Front Street Coffee is here to share exactly what's going on between these two. [more…]

On ordinary days, behind the bar, you get to meet all kinds of customers. Quite a few of them are not used to coffee beans that are on the acidic side. Usually, the coffees with pronounced acidity are those that are roasted lighter, and indeed some lightly roasted coffees have an acidity that is hard to accept. So customers naturally form the impression that cof [more…]

咖啡风味轮是精品咖啡行业的重要工具，但很多人面对这张图却不知如何解读。本文系统梳理了咖啡风味轮的发展背景与实用价值，并深入讲解感官矫正训练的具体方法——从香气记忆的日常积累，到味觉辨析中味蕾与口感的双重感知机制。通过科学训练建立个人风味记忆库，才能真正读懂一杯咖啡。文章还介绍了舌头两种接收器的工作原理，以及顺滑感与涩感背后的物质基础。想要提升品鉴能力，这套训练方法值得反复研读。 [more…]

On ordinary days, I get to meet all kinds of customers behind the bar, and quite a few of them are not used to coffee beans that lean sour. Usually, the coffees with strong acidity are those that are roasted lighter, and indeed some lightly roasted coffees have a sourness that is hard to accept. So customers naturally form the impression that cof [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee) Espresso has always been known as the "soul of coffee"! However, because Espresso has a rich mouthfeel and strong flavor, it is often hard for people to accept. But once [more…]

咖啡早已超越了单纯饮品的范畴，它承载着文艺气息与生活美学，色泽如怀旧影像，香气似梦幻撩人，而味道则因人而异、各有偏好。一杯咖啡中蕴含三十多种化学物质，其中过半微量元素对健康有益，它们共同赋予了咖啡酸、涩、苦等复杂风味。自1930年起，科学家便持续探究这些化学分子对风味的影响，然而关于苦味的专门研究却相对稀少。德国慕尼黑工业大学的Thomas Hofmann针对这一空白展开深入探索，揭示了绿原酸内酯与苯基林丹在不同烘焙阶段的变化如何决定咖啡苦味的强弱。这一发现不仅加深了我们对咖啡的认识，也为咖啡制造商减轻苦味提供了科学依据，推动了方糖、牛奶与咖啡的结合，催生了卡布奇诺、摩卡、拿铁、玛奇朵等经典牛奶咖啡系列。本文将带您了解咖啡苦味背后的化学奥秘及其对咖啡文化的影响。 [more…]

Front Street Coffee · The Art of Blending Coffee Beans and Espresso Blend Recipes Sharing. Blending coffee, also known as mixed coffee, is the practice of combining various single-origin coffee beans to fully bring out the strengths of each single-origin bean, blended beans. [more…]

The charm of dark roast coffee lies in its steady, full-bodied richness. Many people use "heavy" and "smooth" to describe it—this mouthfeel is not a one-dimensional bitterness, but a balance woven from caramel sweetness, bitterness, and an oily richness. Once you understand where the richness of dark roast beans comes from, drinking it becomes even more enjoyable. The foundation of richness [more…]

Front Street Coffee · The Art of Blending Coffee Beans and Sharing an Espresso Blend Recipe Blending coffee, also known as mixed coffee, is the practice of combining various single-origin coffee beans to fully bring out the strengths of each one. Blended beans [more…]

60% of coffee's flavor comes from green beans, 30% from roasting, and 10% from brewing. It's clear that many factors influence coffee flavor. So, as a roaster, how do you decide the roast level of coffee beans? Today Front Street will talk about determining the roasting style. There are two points to keep in mind—cof [more…]

喝过精品咖啡的人，往往对其明亮的酸味印象深刻——那不是令人皱眉的死酸，而是带有果香、花香的愉悦酸感。这种酸味究竟从何而来？本文从咖啡豆的化学成分出发，解析绿原酸、苹果酸、柠檬酸、奎宁酸、酒石酸等有机酸在烘焙过程中的变化，以及蔗糖含量与产地、海拔的关系，帮助读者理解咖啡酸甜苦香的来源。掌握这些知识，不仅能提升品鉴能力，还能为挑选咖啡豆、烘焙生豆和冲泡咖啡提供实用参考。 [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). Espresso has a thicker texture and richer crema than drip coffee, and making high-quality espresso is inseparable from good espresso beans. Generally speaking, espresso beans are all [more…]

咖啡生豆本身并无明显香气与滋味，唯有经过烘焙才能释放出迷人的风味。烘焙时间、温度、方式乃至烘焙师的经验，都会对最终杯中的口感产生微妙影响。从浅烘到深烘，咖啡豆的颜色、酸苦平衡与香气层次各有不同，适合的冲煮方式与饮用偏好也大相径庭。本文前街咖啡将系统梳理浅度、中度与深度烘焙咖啡豆的风味区别，并结合具体产区案例，说明烘焙师如何依据豆性选择曲线，以及不同烘焙度对咖啡化学物质与最终口感的影响，帮助咖啡爱好者更清晰地理解烘焙与风味之间的关系。 [more…]

When it comes to coffee cultivation, people may first think of famous coffee-growing regions such as Africa and Central and South America. In fact, Yunnan in China had records of coffee cultivation as early as 1904, and today it has even ranked among the world's coffee producers. "Yunnan small bean" is appearing more and more frequently in domestic coffee shops, [more…]

Today FrontStreet Coffee would like to share with you the two major categories of coffee beans: single-origin beans and blend beans. Blended coffee, also known as composite coffee, is made by mixing various single-origin coffee beans together, so as to fully bring out the strengths of each single-origin bean. Blend beans [more…]

咖啡风味轮的更新让品鉴体系更加完善，但很多人面对柑橘、莓果、坚果等描述仍感困惑。前街咖啡在日常冲煮中会根据客人的口味偏好推荐不同产区的豆子，而准确辨识风味则需要系统训练。本文从酸、甜、苦、咸四大味谱入手，结合新版风味轮的完整分类，逐一解读花香、果香、草本、坚果可可、甜味、香辛料、酸味发酵、酒精发酵、烘焙及其他类别的具体表现，帮助咖啡爱好者建立清晰的风味认知框架。 [more…]