Many coffee enthusiasts have heard the claim that a long bloom time can lead to under-extraction. This idea seems to contradict our usual understanding of what blooming does. Blooming is meant to release carbon dioxide and improve extraction efficiency, so why would a longer bloom time actually lower the extraction yield? In this article, we compare brewing experiments with two bloom durations—30 seconds and 1 minute 30 seconds—measuring concentration, extraction yield, drawdown speed, and water temperature changes, in an attempt to reveal the true relationship between bloom time and extraction results, and to explore under what extreme conditions an overly long bloom might actually cause under-extraction. [more…]

Blooming is an almost indispensable step in pour-over coffee. Typically, we pour a small amount of hot water to wet the coffee bed, then wait for about 30 seconds. This seemingly simple pause—how much does it actually affect extraction? If we extend the time to 60 seconds, will the coffee taste better? Front Street conducted comparative brewing experiments with three coffee beans of different freshness levels, measuring the extraction yield difference between a 30-second and 60-second bloom, explained the mechanism of blooming from the perspective of carbon dioxide release, and offered blooming time recommendations suitable for beginners. [more…]

"How big of a difference can there be between coffee with a 30-second bloom and a 60-second bloom?" This was a question a friend asked Front Street Coffee yesterday. I have to say, this question is actually quite interesting! As we all know, blooming is a routine step in pour-over coffee. Specifically, before the official pour, we pre-pour [more…]

Will the pouring speed of pour-over coffee actually change the flavor direction of a cup of coffee? Front Street Coffee used Ethiopian Huakui beans as the sample, keeping the coffee dose, grind size, water temperature, and coffee-to-water ratio fixed, and adjusting only the pouring rate of the second stage—injecting 120 ml of hot water at 3 ml per second and 6 ml per second respectively, with two brews for each to compare. The experiment recorded extraction time, coffee bed condition, concentration, and extraction yield data, and compared the sweetness, acidity, and layering performance. The results showed that a slower pour can indeed extract more substances, but neither brewing method produced negative flavors, and the differences were mainly reflected in berry sweetness and the liveliness of acidity. This article will present the complete experimental process and data to help enthusiasts understand the true impact of pouring speed. [more…]

A friend once asked while buying beans at the Front Street store: can coffee grounds that have already been brewed once be used again for a second cup? Some bloggers online have also demonstrated that a second brew can still yield decent flavor. From a practical standpoint, of course coffee grounds can be brewed again—even a third or fourth time. But "can be brewed" and "tastes good" are two entirely different matters. This article starts from actual tests on Front Street's Sidra, and combines the proportion of soluble matter, extraction yield control, and the differences in dissolution rates of acidity, sweetness, and bitterness to explain why coffee is usually brewed only once, and the fundamental reasons why a second brew tastes thin and lacks layering, before offering a conclusion that better suits the general palate. [more…]

In the pour-over coffee process, blooming is a step that seems simple yet often raises questions. Many people default to 30 seconds, but are not quite clear about when this duration actually starts, nor are they sure what changes extending it to 60 seconds or shortening it to 20 seconds will bring. Front Street Coffee conducted multiple sets of comparative experiments, testing the performance of no blooming, 30-second blooming, 45-second blooming, and 60-second blooming on coffee beans of different freshness levels. This article will focus on the core purpose of blooming—releasing carbon dioxide and improving extraction efficiency—to explain why 30 seconds is regarded as the safe choice, while also explaining how to flexibly adjust the time according to the condition of the beans, so that every cup of pour-over coffee can achieve the ideal flavor and mouthfeel. [more…]

If you mistakenly press the stop button during espresso extraction before reaching the target yield, can you simply press it again to continue extraction? This article compares three espressos—normal extraction, mid-extraction stop-start, and stop-start near the final phase—to analyze how segmented extraction affects the color, flavor, and concentration of the coffee liquid. Front Street Coffee uses the Warm Sun blend, testing with 20g of grounds extracted to 40ml at a 1:2 brew ratio, to reveal why under pressurized extraction, changes in the puck structure cause an overly fast flow rate and under-extraction during a second extraction, along with operational recommendations. [more…]

Pour-over coffee is usually extracted only once, but recently a method called "double pour-over" has attracted attention—pouring the already-brewed coffee liquid back into the coffee bed in the dripper for a second extraction, which is said to make the coffee sweeter. Front Street Coffee specially designed a set of comparative experiments for this, selecting three single-origin beans with different roast levels and conducting regular pour-over and second-round re-pouring respectively, comparing them one by one across dimensions such as aroma, acidity, body, and finish. The experimental results show that, provided the beans are of good quality and the parameters are properly controlled, second-round re-pouring can indeed enhance intensity, but not all roast levels are suitable. This article will present the complete experimental process, brewing parameters, and flavor comparison results, and provide suggestions for bean varieties suitable for trying double pour-over. [more…]

In the world of coffee extraction, time is a seemingly simple yet extremely critical variable. Different brewing methods have different time requirements, and because espresso has extremely high extraction efficiency, its sensitivity to time far exceeds other methods—even a difference of just 3 seconds can make the flavor in the cup completely different. This article will discuss espresso extraction time, tracing the evolution from the traditional 20–30 second approach to the modern recommended 25–30 second approach, analyzing how time assists in dialing in the grind, judging flavor trends, and verifying extraction stability, and explaining why light-to-medium roasts or large dose scenarios require appropriately extended extraction times. [more…]

When brewing pour-over coffee, the timer function on a digital scale is often overlooked, yet it is crucial for judging extraction results. Front Street Coffee recommends keeping the total extraction time at around 2 minutes, in practice falling between 1 minute 50 seconds and 2 minutes 10 seconds. However, there is disagreement over when to start the timer: should it begin the moment water is poured, or should the clock only be started after pouring is finished? Front Street believes that extraction begins the instant the coffee grounds touch water, and therefore insists on timing from the very first second of pouring. This article builds a pouring model around time milestones, explaining how to troubleshoot issues such as flow rate and grind size through segmented timing, making time an effective diagnostic tool for brewing. [more…]

Espresso is far more sensitive to extraction time than any other brewing method—a difference of just a few seconds can make the flavor worlds apart. This article will take you back to the classic 20-30 second standard in early espresso textbooks, analyze why the old formula no longer applies now that contemporary coffee bean quality has improved, and introduce in detail the current new-generation extraction framework based on double baskets, measured by weight, with a 1:2 brew ratio and a 25-30 second extraction time. At the same time, the article will also recommend two espresso beans suited to different scenarios—Front Street Classic Blend and Front Street Dark Cocoa Blend—to help you quickly find a stable extraction solution. [more…]

Segmented pouring in pour-over coffee seems simple, but in reality, even subtle changes in the water volume of each segment leave their mark in the cup. Many friends new to pour-over are often puzzled: how exactly should the water volume after blooming be divided? And in what direction do different distribution schemes take the flavor? Front Street used the Yirgacheffe Gote Gote as a sample and designed three comparative experiments, fixing the dose at 15 grams, the coffee-to-water ratio at 1:16, medium-fine grind, and water temperature at 91°C, changing only the water volume ratio between the second and third pours, to observe how acidity, sweetness, mouthfeel, and finish trend. The experiment also revealed the potential impact of the relationship between the height of the coffee bed wall and the water level on extraction uniformity, and offers reference ideas for flexible adjustment in actual practice. [more…]

The three-stage pour is a common and practical pouring technique in pour-over coffee, splitting the entire extraction process into three pouring stages and influencing the final flavor by controlling the water volume and timing of each stage. Using 15 grams of grounds, a 1:15 coffee-to-water ratio, 88°C water temperature, and a medium-coarse grind as parameters, this article breaks down in detail the brewing process for Front Street Colombia Huila, including the specific steps of a 30-second bloom, a second pour of 100 grams, and a third pour of 95 grams, and answers how to determine the best time for the next pour. At the same time, the article also shares an experimental method of dividing the coffee liquid into three stages—beginning, middle, and end—for separate tasting, helping enthusiasts identify the differences in flavor between each stage, so as to adjust the pouring ratios and find a taste they are satisfied with. [more…]

When using a three-pour method for pour-over coffee, should the third pour wait until the water has fully drained, or should it be added before the water level reaches the bottom? Front Street answers this through two sets of comparative experiments. First, lightly roasted Yirgacheffe Geddid was brewed with continuous and interrupted pouring respectively, and the total time differed by 10 seconds, with slight differences in aroma and acidity, but the overall difference was not significant. Then the test was repeated with medium-dark roasted Papua New Guinea Bird of Paradise, but the interrupted-pour cup showed obvious bitterness. The reason is that medium-dark roasted beans are loose in texture and have a low margin for error, so bitterness-prone compounds are easily over-extracted when the time is prolonged. The article ultimately points out that interrupted pouring is not unworkable; the key is to pair it with corresponding parameters, such as the coarse-grind 46 brewing method. [more…]

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). One of the great joys of pour-over coffee is using different brewing techniques to interpret a cup of coffee. And as for pour-over methods, I believe everyone pays close attention. So the most widely spread pour-over technique at present is the one-pour method. [more…]

In the previous article, Front Street explained why it has always used the three-pour brewing method; this time, it will take a deeper look at the principles and operational details behind it. Starting from the logic of extraction, the article explains why blooming releases carbon dioxide, how staged pouring enhances layering, and how the interval between pours affects the temperature of the coffee bed and extraction efficiency. Front Street will then provide complete brewing parameters, including coffee dose, grind setting, water temperature, coffee-to-water ratio, and dripper choice, and demonstrate step by step the specific techniques for the three stages of blooming, main extraction, and finishing, as well as how to finally swirl the brewed coffee so that the flavors from each stage blend together. This is suitable reading for coffee enthusiasts who want to refine their pour-over technique. [more…]

The three-pour method is a common pouring technique in pour-over coffee, but many enthusiasts are unclear about how exactly the water should be divided between the two pours after the bloom. This article uses 15 grams of coffee at a 1:15 coffee-to-water ratio, selecting Front Street 2013 Yunnan Arabica Typica for a comparative experiment, setting up three schemes: a larger second pour, two equal pours, and a larger third pour, and analyzes the flavor differences in terms of acidity, body, and aftertaste. The experiment shows that the more water allocated to a given pour, the higher the extraction efficiency of soluble substances during that stage, and that the height of the coffee bed wall and the rate of water level descent are key references for judging the pouring rhythm. [more…]

When you go to a coffee shop, you often see both pour-over coffee and espresso on the menu—so what exactly is the difference between the two? From the perspective of Front Street Coffee, this article systematically sorts out the 9-bar pressure extraction process of espresso and the pressure-free free-fall extraction method of pour-over coffee, comparing their respective characteristics and suitable scenarios. It also introduces in detail the three-stage pouring technique for pour-over, and, using Front Street Ethiopia washed Yirgacheffe G2 as an example, provides specific brewing parameters and flavor descriptions, helping beginners build an understanding of regional flavors and find the type of coffee that suits them. [more…]

On the journey to pursue a good cup of coffee, besides high-quality beans and skilled technique, some seemingly inconspicuous auxiliary gadgets often play a finishing touch. Front Street Coffee has previously introduced sharp tools such as latte art needles and WDT needles. Today, continuing with the theme of coffee auxiliary tools, we will review the uses and methods of the secondary dispersion screen, Paragon ice ball, Lily Drip, dosing funnel, extraction observation mirror, and a silencing air blower. These tools help coffee enthusiasts and professionals complete brewing more calmly from the perspectives of even extraction, locking in aroma, improving puck distribution, enhancing operating cleanliness, making it easier to observe extraction status, and reducing noise. Whether you are a beginner just starting out or an advanced player pursuing details, you can find a practical solution that suits you. [more…]

In the three-pour method for pour-over coffee, the timing of the third pour is often overlooked—should you wait for the coffee liquid to completely drain before pouring, or should you top up promptly once the water level drops by half? Front Street Coffee conducted two sets of comparative experiments, using Costa Rica Strawberry Candy and washed Yirgacheffe beans respectively, to analyze in depth the practical differences between the two pouring methods from the dimensions of aroma, flavor, extraction time, and coffee bed state. The experiments revealed how the timing of the pour affects the temperature of the coffee bed, fine migration, and the final flavor performance, while also explaining why beans of different hardness show completely different results when faced with waiting for the liquid to drain. This article will present the full experimental process and conclusions to help coffee enthusiasts understand the core logic of judging when to pour in the three-pour brewing method, and provide Front Street's practical recommendations. [more…]