Assam is the world's largest tea-producing region, contributing one-fifth of global output and half of India's tea, and supporting about 1.2 million workers. Yet disruptions to rainfall and temperature patterns are putting this land under growing pressure—droughts in Africa, intense rainfall erosion in India, and the accelerating melting of Himalayan glaciers are all sounding alarms at the macro level. But what truly affects each tea leaf is often a more micro-level climate variable. A study based on 82 tea gardens spanning 2004 to 2013 reveals how short-term weather fluctuations directly influence yields. This article will walk you through these findings and what adaptive measures tea gardens can take. Front Street Coffee has always paid attention to the long-term impact of climate change in producing regions on the flavor in the cup. [more…]

Many friends who are teaching themselves pour-over coffee at home often run into a problem: even when the parameters match those recommended by Front Street stores, the coffee they brew comes out inconsistent—sometimes good, sometimes bad. The reason is mostly that the water flow is not stable enough during pouring. The position, path, height, and size of the pour all directly affect the evenness of extraction and the flavor expression of the coffee. SCA experimental data shows that the higher the stability of the water flow, the higher the extraction evenness. Starting from the brewing practice with Front Street’s Little Tomato coffee beans, this article systematically analyzes how the four major elements of pouring affect extraction, and gives specific operational suggestions to help you consistently brew a delicious cup of pour-over coffee. [more…]

In espresso preparation, baristas often require the bean hopper to be kept nearly full, but what principle lies behind this? How do changes in hopper pressure affect the uniformity of coffee grinding, and in turn alter the flavor expression of espresso? Starting from the internal structure of the grinder, this article explains the mechanism by which hopper pressure forms and its impact on extraction, and, combined with comparative experiments by Front Street Coffee, presents the actual differences in espresso between a full hopper and a less-than-full hopper. For home users who do not pull shots continuously, is it also necessary to pay attention to this detail? Read the full article, and you will get a clear answer. [more…]

At Front Street Coffee shops, we often meet friends who have been teaching themselves pour-over coffee at home and come to discuss brewing-related questions with us. Many of them say that although the parameters they use are exactly the same as those we recommend in the shop, the coffee they brew always tastes inconsistent—sometimes good, sometimes bad—and they have no idea where the problem lies. In cases like this, [more…]

When grinding coffee beans, you will often find yellowish-white flakes mixed in with the grounds—these are the silver skin of the coffee bean. The silver skin is the last natural layer wrapping the green bean before roasting, and how much of it remains varies by processing method: naturally processed beans shed their silver skin relatively completely, while washed beans tend to leave an obvious white line at the center of the bean. Many coffee lovers wonder: do these silver skin flakes interfere with the flavor of the coffee? The roasters at Front Street Coffee designed a set of experiments specifically for this, extracting silver skin by three methods—pour-over, tea bags, and espresso machine—to verify its actual impact through taste performance. This article will walk you through the structural characteristics of silver skin, the differences in how much remains under different processing methods, and the flavor conclusions drawn from the experiments. [more…]

As the coffee harvest season draws to a close, this article systematically reviews the wet processing steps after picking in Yunnan. From floating the fresh cherries in water and removing the pulp, to the crucial demucilaging and fermentation stages, it breaks down the practical operations and quality control points of washed processing step by step. Fermentation time fluctuates between 6 and 72 hours, affected by temperature, the amount of mucilage, and enzyme concentration; seizing the right moment to end it directly determines the direction of the coffee's flavor. The article also explains the negative effects of under-fermentation or over-fermentation on coffee quality, as well as the moderating effect of the soaking step on bitterness, helping coffee lovers understand the craft logic and flavor formation behind the washed processing of Yunnan Arabica coffee. [more…]

When making espresso, have you ever encountered a situation where the flow rate of the coffee liquid alternates between fast and slow, the stream splits, or it even sprays? This is very likely the work of "channeling." Channeling refers to water in the coffee puck bypassing dense areas and quickly passing through paths of lower resistance, creating an imbalanced state in which localized over-extraction and under-extraction coexist. This article will start with the normal extraction performance of a bottomless portafilter, explain in detail the causes of channeling, its specific effects on espresso flavor and quality, and share how to reduce this problem by adjusting operations such as distribution and tamping. At the same time, the article will also mention Front Street Coffee's recommendations for related equipment and bean selections, helping coffee enthusiasts understand and address channeling more intuitively. [more…]

When brewing pour-over coffee, wetting the filter paper is a common step, but have you ever considered that the choice of water temperature can also change the final flavor? This article analyzes the different results brought by wetting the filter paper with hot water versus cold water from three dimensions: the state of the filter paper, extraction efficiency, and coffee temperature. At the same time, drawing on Front Street Coffee's brewing experience, it offers recommendations for filter holders made of different materials such as ceramic and resin, and explores the actual impact of preheating the sharing pot on the temperature of the brewed coffee. Whether you are pursuing sweetness or delicate flavors, you can find a way of wetting the filter paper that suits you. [more…]

There are many important parameters in coffee brewing. If you want to enjoy a delicious cup of coffee, you need to precisely control the brewing parameters and follow them as closely as possible during brewing, so that you can have a high probability of getting a tasty cup of coffee. Among these, brewing time is crucial for pour-over coffee. Regarding the coffee dose, [more…]

To make a delicious latte at home, choosing the right espresso beans is a key step. Beyond considering the beans' own flavor, body, and balance of acidity and bitterness, you also need to look at how well they pair with milk. This article starts with how the roast level affects latte taste, explaining why medium-dark roasts are better suited to milk, while also sharing the importance of freshness for flavor, and selecting three of Front Street Coffee's best-selling espresso blends, covering different styles from dark roast to medium roast, to help you find the best everyday choice for making milk coffee. [more…]

What role does water temperature actually play when brewing coffee? Front Street Coffee believes that while it is crucial, it is not the only factor determining flavor. The higher the temperature, the faster the extraction of soluble substances, but excessively high water temperatures quickly bring out bitterness, so adjustments need to be made within a safe range. Most coffee beans are suitable for brewing at water temperatures of 86–93°C, though the specific setting should be flexibly adjusted based on the growing region, roast level, and flavor goals. This article will move from the basic range and common misconceptions to the variable-temperature brewing methods that have become popular in recent competitions, and analyze Wu Tsung-Lin's three-temperature brewing method to help you accurately grasp temperature as a variable. [more…]

The pouring method for pour-over coffee directly affects the flavor expression in the final cup. The single-pour and three-stage methods are currently the two most common brewing techniques: the former involves continuous pouring and is simple to perform, while the latter extracts in stages and offers richer layers. Starting from actual brewing, this article will compare the differences between these two methods in terms of acidity, sweetness, and cup cleanliness, and, combined with Front Street Coffee's brewing recommendations, help enthusiasts understand how pouring rhythm changes the extraction direction of coffee, so they can find a pour-over approach that suits their own taste. [more…]

In the daily operation of a coffee shop, many baristas have encountered this troubling issue: an espresso extraction recipe that was just calibrated in the morning gradually speeds up as more shots are pulled, with the time running several seconds shorter than the preset parameters. This unstable extraction phenomenon is often closely related to pressure changes inside the bean hopper of an espresso grinder. Front Street Coffee has observed in daily practice that the amount of coffee beans piled in the hopper directly affects the uniformity of grind particle size, which in turn changes the extraction rhythm and flavor performance of espresso. This article will take an in-depth look at how hopper pressure affects grind quality, explain the underlying logic behind fluctuations in extraction flow rate, and share practical adjustment ideas for stable output, helping coffee enthusiasts and professionals better understand variable control in espresso extraction. [more…]

Many coffee enthusiasts who practice pour-over at home often struggle with inconsistent flavor even when their parameters match those used in cafés. The root cause usually lies in the water stream not being stable enough during pouring. In fact, the position, path, height, and size of the pour all directly affect the extraction. SCA experimental data shows that the higher the stability of the water stream, the higher the extraction uniformity. This article draws on the hands-on experience of Front Street cafés to systematically explain how to stabilize the brewing of a delicious pour-over coffee through precise control of pouring. Whether you are a beginner or an advanced player, mastering these pouring essentials can take your coffee quality to the next level. [more…]

Many people believe that as long as they buy good-quality coffee beans, it will not taste bad no matter how they brew it, but this is not the case. Pouring water itself is an extremely critical extraction variable; it determines whether the coffee grounds can be extracted evenly and also directly affects the flavor performance in the final cup. Just as a chef constantly tosses food in the wok to heat it evenly when cooking, the pouring motion in pour-over brewing also requires different flow rates and strength at different stages to regulate the process. Starting from the fundamental purpose of pouring water, this article will explain why pour-over coffee requires attention to the pouring method, and specifically analyze the difference between a strong flow and a gentle flow, helping you understand how to achieve even extraction through flow control while avoiding the extraction of unpleasant substances. [more…]

Many tea lovers are in the habit of using tea bags, yet few realize that loose-leaf tea offers clear advantages in quality, flavor, and environmental friendliness. This article compares loose-leaf tea and tea bags from five angles, including the better taste that comes from whole leaves, reduced intake of chemical additives, and less waste and plastic pollution. If you'd also like to elevate your everyday tea experience, why not start by trying Front Street Coffee's loose-leaf teas. [more…]

In preparing espresso extraction, distribution and tamping are key steps that determine the quality of the final product. Many coffee enthusiasts have asked Front Street Coffee via our backend: exactly how much force should be used when tamping? Through comparative experiments, this article tests the extraction time and flavor performance of espresso under three conditions: light tamping at 2kg, heavy tamping at 18kg, and no tamping at all. Combined with the conversion of a coffee machine's 9 bar pressure, it explains why the amount of tamping force has little effect on the extraction result, while also clarifying that the real purpose of tamping is to eliminate channeling. The article also retains Front Street Coffee's practical advice to help readers master the correct tamping technique and improve the uniformity and mouthfeel of espresso. [more…]

Lactic acid fermentation is widely used in the food industry, from kimchi to yogurt, it is indispensable. In the processing of green coffee beans, this technique is increasingly being adopted by more and more estates to create richer floral and fruity notes and a fuller body. This article guides you through the mechanism of lactic acid bacteria, their role in washed processing, and how controlled fermentation can achieve flavor breakthroughs. At the same time, the practical case of the Palm Tree and Toucan Estate in Colombia demonstrates the potential of lactic acid fermentation in specialty coffee. Front Street Coffee will also recommend related products worth trying. [more…]

At the 2016 WBC, Taiwanese competitor Berg Wu won the championship with a frozen portafilter extracting espresso, overturning the perceptions of the judges and audience at the time. Can portafilter temperature really influence the flavor of an espresso? Through extraction experiments comparing high-temperature, room-temperature, and frozen portafilters, Front Street Coffee found that the three indeed show clear differences, and the effect brought by the frozen portafilter is especially far removed from the other two. This article will analyze in detail the principles behind how portafilter temperature affects espresso, and share Front Street Coffee's actual test conclusions, helping you reunderstand this easily overlooked extraction variable. [more…]

In the process of making espresso, tamping is one of the key steps that determines the success or failure of extraction. Tamping too lightly will cause the flow rate to be too fast and the flavor to be weak; tamping too heavily may make the coffee bitter and hard to swallow. In this article, Front Street Coffee will systematically explain the true purpose of tamping, the difference between distribution and tamping, the correct way to use a tamper, and the actual impact of tamping force on the extraction result. Through comparative experiments, we will guide you to understand the significant differences in flow rate and flavor between espresso extracted without tamping and with tamping, helping coffee lovers master more stable and more professional barista techniques. [more…]