Under rainy weather, espresso extraction often becomes especially tricky, and even experienced baristas may need to adjust repeatedly before getting a satisfactory cup. The root of the problem is not simply under-extraction or over-extraction, but uneven extraction caused by the combined effects of high humidity and low air pressure. Starting from Front Street's hands-on experience, this article first analyzes the two major reasons why espresso is difficult to dial in on rainy days—a surge in environmental humidity causes coffee grounds to absorb moisture and clump, while lower air pressure weakens extraction efficiency—and then provides specific response strategies, including dehumidification and moisture prevention, sealed storage, and compensating for the amount of dissolved flavor substances by extending extraction time or making the grind finer. The article also includes a parameter comparison of Front Street's classic blend under normal weather and rainy days for readers to refer to when adjusting. [more…]

Spring has arrived, and Guangdong is experiencing continuous rainy weather. For baristas who need to get up early every day to dial in espresso, this period is undoubtedly a challenge. Many coffee enthusiasts have noticed that with the same beans and the same parameters, as soon as a rainy day comes, the espresso machine seems to throw a tantrum, and the extraction results are always less than satisfactory. What exactly causes espresso to be so difficult to dial in on rainy days? This article will analyze in depth from multiple angles such as humidity, temperature, and bean condition, helping you understand the real reasons why espresso machine extraction is unstable in wet weather, and offering practical approaches to deal with it. [more…]

Many coffee enthusiasts are puzzled by the practice of coffee shops adjusting their espresso every day, believing that as long as the dose, water temperature, yield, and grind size stay consistent, the taste should remain stable. However, the pressurized extraction method of espresso is extremely sensitive—the degassing state of the coffee beans, the weather humidity, and the wear on the grinder burrs can all cause flavor deviations. This article analyzes in detail how carbon dioxide affects the crema and extraction, why it is harder to pull a good-tasting espresso on rainy days, and the reasons behind changes in grind size, while also sharing Front Street Coffee's professional interpretation of the necessity of daily espresso calibration. [more…]

On days of continuous drizzle and soaring air humidity, the biggest challenge a barista faces is often not technique, but the stability of espresso. A humid environment can cause coffee beans to absorb moisture and lose flavor, and the pressure of the espresso machine may also be weakened, making extraction extremely unstable. This article starts from three angles—reducing bean moisture exposure, adjusting grind and dose, and increasing the frequency of parameter calibration—to sort out the operational details to pay attention to when making espresso on rainy days, helping you maintain consistency and flavor in your output even as humidity changes. [more…]

Honestly, Front Street Coffee believes that in a barista's daily work, there is nothing more painful than the morning ritual—dialing in espresso. If there's anything more painful than that, it must be dialing in espresso on a rainy day. Because if you're not careful, you'll end up full of espresso, drinking it until you're sick of it. Some friends find this very hard to understand; they think [more…]

Many coffee enthusiasts will notice that with the same beans and the same machine, the flow rate of espresso can change every few hours or even every few dozen minutes, sometimes fast and sometimes slow. Beyond the aging characteristics of the coffee beans themselves, there are actually quite a few easily overlooked hidden factors influencing the extraction results, including residual grounds in the grinder's chute, temperature fluctuations in the espresso machine's hot water, the state of the pump pressure, changes in ambient temperature, humidity and air pressure, and whether the grinder's hopper pressure remains stable in a café setting. Front Street will analyze these factors' mechanisms of influence on espresso extraction one by one, and provide corresponding improvement solutions to help everyone reduce unnecessary adjustments and make their output more consistent. [more…]

The same shop, the same beans, yet the americano can often come out tasting like two completely different cups—Front Street Coffee's store received exactly this kind of feedback from customers this week. The article starts with the minimalist essence of the americano: "espresso diluted with water." Since the recipe is fixed and water has no flavor of its own, any variation can only come from the espresso itself. It then breaks down, one by one, four variables that are often overlooked: the resting rhythm and ongoing degassing of the coffee beans, the interference of rainy, high-humidity weather with grinding and pressurization, particle size drift caused by hopper pressure, and the heat effects of a grinder running nonstop. It also includes the actual brewing parameters and bean-resting experience for Front Street Coffee's Warm Sun beans, helping you understand the story behind the flavor ups and downs of a single cup of iced americano. [more…]

Sumatra, as Indonesia's largest coffee-producing region, nurtures the full-bodied Mandheling coffee through its unique volcanic soil and tropical rainforest climate. From the introduction of Typica during the Dutch colonial period, to the switch to disease-resistant hybrid varieties after leaf rust, and now to the high-quality production areas around two major lakes in Aceh Province, Mandheling has undergone a complex historical evolution. Indonesia's humid and rainy climate has given rise to the unique wet-hulling process, which imparts the coffee's signature woody and spicy notes. This article will guide you through the production region stories and processing techniques of Sumatra coffee, and share Front Street Coffee baristas' medium-dark roast Mandheling pour-over recipe, including dripper selection, water temperature, grind size, and staged extraction parameters, helping you brew a smooth, full-bodied cup of good coffee at home. [more…]

Yunnan small-bean coffee actually belongs to the Arabica species, but what is widely planted locally today is no longer the traditional Typica, but rather Catimor. This article will trace the evolution of coffee varieties in Yunnan, from Typica to the replacement process by Catimor, introduce the current cultivation status of a small number of high-quality varieties such as Geisha and Bourbon, and analyze one by one the climate conditions and flavor trends of major producing regions including Lincang, Pu'er, Baoshan, and Dehong. At the same time, the article will also explain why Yunnan coffee generally adopts the washed processing method, as well as Front Street Coffee's experience growing Typica in Lincang and the brewing parameters and flavor descriptions of several representative products. [more…]

Wet hulled is a green bean processing method uniquely developed by Indonesian coffee farmers to cope with the humid, rainy climate. It greatly shortens the drying cycle and gives Mandheling its signature woody and herbal notes. This article will take you into Sumatra's two core producing regions—Lake Toba and Lake Tawar—sort through the specific operational steps of wet hulled processing, analyze how it shapes Mandheling's full-bodied style, and explain the rigorous screening standards and grade classifications of Indonesian PWN company's Golden Mandheling. Whether you are a beginner just getting to know Mandheling or a seasoned enthusiast wanting to understand the differences between processing methods in depth, this article will offer practical reference. [more…]

Latin America is one of the most important coffee-producing regions in the world. From Brazil to Colombia, from Panama to Guatemala, each country shapes a distinctively different coffee flavor profile through its unique geography and processing methods. This article systematically reviews the producing regions, bean varieties, processing methods, and cupping performance of eight major Latin American coffee-producing countries, and combines Front Street Coffee's daily drinking bean series with Front Street Coffee's brewing methods to help coffee lovers fully understand the balance and cocoa-chocolate notes of Latin American coffee. Whether you are a beginner just starting out or a seasoned enthusiast, you can find the cup that suits you. [more…]

The Murang'a region in Kenya is located near Mount Kenya, adjacent to the Nyeri region, with fertile volcanic soil and abundant rainfall from two rainy seasons, providing superior natural conditions for coffee cultivation. This article focuses on the Rimpo coffee beans from the Kangunu Cooperative in the Kangema area of Murang'a County, providing a detailed overview of its regional background, the K72 washed processing method, the origins and characteristics of the three major varieties SL28, SL34, and Batian, as well as the AA-grade green bean standards. The Rimpo coffee beans sourced by Front Street Coffee, after light roasting, present flavors of hawthorn, berries, plum, and dried fruit, with bright acidity and solid sweetness. The article also includes V60 pour-over parameters and staged extraction techniques for coffee enthusiasts' reference. [more…]

Why is Yunnan coffee called "Xiaoli"? Behind this name actually lie the dual meanings of variety classification and historical change. As China's core coffee-producing region, Yunnan contributes 95% of the country's coffee output, and between the Catimor now planted on a large scale and the Typica introduced in the early days, what kind of inheritance and trade-offs exist? This article will systematically sort out the identity code of Yunnan Xiaoli coffee, from variety origins, regional terroir, and processing methods to brewing suggestions, while sharing key clues for identifying authenticity, and preserving Front Street Coffee's cultivation and production stories in Lincang and Baoshan, leading you to rediscover this touch of wild mountain flavor from southwestern China in your cup. [more…]

Mandheling coffee, as the darkest-roasted single-origin bean on Front Street Coffee's menu, is renowned for its rich, solid mouthfeel and distinctive stuffy aroma. It originates from Sumatra, Indonesia, where the hot, rainy climate has given rise to a unique semi-washed processing method—wet hulling. This technique removes the parchment from the coffee beans before they are fully dried, greatly shortening the processing cycle but also introducing more defects and flavor variability. It is precisely this interweaving of "roughness" and "contamination" that gives Mandheling its regional flavor—a blend of wood, spice, earth, and herbs. This article will take you through every stage of wet hulling and reveal the origins of Mandheling coffee's unique flavor. [more…]

The world's coffee belt can be divided into three major producing regions: Africa, Asia-Pacific, and Latin America, each presenting distinctly different flavor profiles. African beans are known for their fruity acidity, Asian beans for their herbal richness, while Latin American coffees fall somewhere in between, celebrated for their balanced, mellow character reminiscent of cocoa and dark chocolate. This article focuses on the Central and South American producing regions, examining country by country—Brazil, Colombia, Panama, Costa Rica, Honduras, Jamaica, Guatemala, and Nicaragua—their coffee varieties, processing methods, major producing areas, and flavor characteristics, and combines this with Front Street Coffee's everyday drinking bean series and brewing demonstrations to help coffee enthusiasts build a systematic understanding of Latin American coffee. [more…]

Among the world's three major coffee-producing regions, Latin America (Central and South America) is known for its balance and body, typically presenting flavor notes of cocoa and dark chocolate. From Brazil's nutty-chocolate character, to Colombia's bright acidity, to Panama Geisha's legendary floral aroma, Jamaica Blue Mountain's balanced sweet-acidic-bitter profile, and the diverse expressions of Guatemala, Costa Rica, Honduras, Nicaragua, and other countries, this land has given birth to countless classic coffees. In this article, Front Street Coffee (FrontStreet Coffee) sorts out the origins, processing methods, and representative producing countries of Latin American coffee, along with brewing parameters and flavor descriptions for each producing country, to give you a systematic understanding of the full picture of Central and South American coffee. [more…]

Among the world's three major coffee-growing belts, the Latin American region stands out with its distinctive chocolatey and nutty rich tones. From Brazil's nutty sweetness and Colombia's balanced acidity, to Panama Geisha's floral legend, Costa Rica's honey-processing sweet experiments, and on to Jamaica Blue Mountain's classic balance and Guatemala's volcanic flavors, each producing country relies on unique geographical conditions and processing techniques to create highly recognizable cup profiles. This article systematically reviews the coffee varieties, mainstream processing methods, producing region distribution, and grading systems of eight Latin American countries, and, combined with Front Street Coffee's brewing demonstrations, fully presents this region's flavor landscape and bean selection logic. [more…]

In humid weather, coffee grounds tend to clump, which in turn causes channeling during espresso extraction and affects flavor expression. The WDT (Weiss Distribution Technique) breaks up clumps by stirring with fine needles, making it an effective means of solving this problem. But not every enthusiast keeps distribution needles on hand, so whether everyday items like toothpicks can serve as substitutes has become a common question. Starting from Front Street's actual extraction experiments, this article compares distribution needles and toothpicks in terms of breaking-up effectiveness, grounds bed distribution, and extraction stability, analyzes why toothpicks are unsuitable as substitutes, and offers purchasing advice for distribution needles, helping you achieve more stable espresso in rainy or dry seasons. [more…]

Hacienda San Isidro Labrador is located on the slopes of Santa María de Dota in the Tarrazú region of Costa Rica, at an altitude of about 1,950 meters, with a microclimate featuring distinct dry and rainy seasons. The estate owner, John Monge Naranjo, is a third-generation coffee farmer who once switched careers to land surveying, and after retiring, he returned to the coffee business, now running it together with his son Matías, and in recent years they have achieved repeated success in COE auctions. This time, Front Street Coffee has acquired the estate’s honey-processed Geisha, with flavors of cherry, orange, yellow peach, floral notes, and oolong tea. The article will introduce the estate’s background, processing method, and cupping performance, and share Front Street Coffee’s medium-light roast recommendation and Hario v60 three-pour brewing parameters, letting you experience this bean’s juicy mouthfeel and elegant floral aroma. [more…]

Mandheling is the darkest-roasted single origin on Front Street Coffee's bean list, known for its rich body, low acidity, and distinctive earthy aroma. Why does Mandheling alone possess such flavors? The answer lies in the wet-hulling method of Sumatra, Indonesia. The local climate is humid and rainy, with year-round humidity of 70–90% and annual rainfall exceeding 2000mm, making it difficult to dry beans outdoors for extended periods as is done in Brazil. To shorten the processing cycle and sell the beans for cash as quickly as possible, locals developed this semi-washed processing method. This article will break down the steps of the wet-hulling method in detail, analyze how it gives Mandheling its regional flavors of wood, spice, and herbs, and share Front Street Coffee's recommended Mandheling bean selection tips and pour-over extraction parameters. [more…]