In the heat of summer, a refreshing glass of cold brew is the go-to choice for many coffee lovers looking to beat the heat. But have you ever considered that coffee beans blended from two or more varieties can also produce an outstanding cold brew? Cold brew, due to its low-temperature, long-duration extraction, has a richer, smoother mouthfeel, yet its floral and fruity notes gradually fade with storage time. This article draws on the hands-on experience of Front Street Coffee, first outlining the characteristics of cold brew and the advantages of blended beans, then recreating several blending experiments one by one: from Sidra with Geisha, Pacamara with Red Cherry, to Huakui paired with Strawberry Candy and Wangshan Geisha, and finally challenging the dark-roasted Queen's Estate blended with Flower God. Some of these recipes are full-bodied and layered, while others flop into a "mask of pain," yet they perfectly showcase the fun and possibilities of blended cold brew. [more…]

The most fascinating thing about cold brew is that it works like a slow-motion projector: the flavor release that hot extraction completes in a few dozen seconds is stretched out over more than ten hours, and the character of every flavor compound is amplified and put on display. Running a set of cold brew comparison experiments with beans processed in different ways lets you directly see how each processing method truly expresses itself at low temperatures. The experiment is set [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…]

When brewing coffee, water quality, cooling methods, and tasting cup types are often treated as independent variables, but can combining all three lead to more significant sensory improvements? Front Street Coffee designed a controlled experiment using Huakui beans as samples: one group used regular mountain spring water, no ice ball, and a standard espresso cup, while the other used a custom water concentrate, a Paragon ice ball, and an aromatic tasting cup, with completely identical brewing parameters. Through concentration measurements and blind tasting, the actual contributions of these tools at different stages were verified. This article documents in detail the TDS control of the custom water concentrate, the cooling mechanism of the Paragon ice ball, and the aroma-concentrating effect of the tasting cup, and invited colleagues and customers to participate in a blind selection. The final results were highly consistent, providing coffee enthusiasts with a reproducible reference for combined techniques. [more…]

The peak flavor period refers to the optimal window for tasting coffee beans after roasting is completed. During this time, because there is not too much carbon dioxide interference, and the coffee's flavor compounds have not yet been lost in large amounts, we can brew coffee with the richest aroma and obtain the most complete flavor experience. But did you know, [more…]

Cold brew coffee usually requires 8 to 12 hours of low-temperature slow extraction, but what if you want to drink it the same day? Raising the water temperature can speed up extraction, but if you use hot water directly, it becomes hot brew, and the floral and fruity aromas and low bitterness unique to cold brew will also disappear. Front Street compared three methods through experiments: conventional 23°C cold water extraction for 10 hours, 40°C warm water extraction for 4 hours, and 92°C hot water blooming followed by room-temperature water extraction for 4 hours. The beans used were Colombia · Hanami, with full berry acidity, floral notes, and pink pepper flavors. The results showed that the 40°C warm water rapid cold brew was closest to the performance of conventional cold brew, with both a fermented feel and clearly presented flavors, making it suitable for friends who want to drink cold brew quickly. [more…]

Should you add ice first or ice last when making iced pour-over coffee? This question may seem like a mere difference in procedure, but behind it may lie the preservation and release of coffee flavors. Front Street Coffee once mentioned the Paragon ice ball in an article; its principle is to lock in volatile aromas by rapidly cooling the coffee liquid, allowing the drinker to experience a richer coffee flavor. Inspired by this, we restarted the experiment, using the same Colombian Frontera Estate washed Geisha, to compare the differences between adding ice first and adding ice last in iced pour-over coffee in terms of operation, temperature, aroma, and taste. The experiment strictly controlled the ratios of coffee grounds, water, and ice, and corrected for differences in tasting time. What was the final result? Is there really an obvious difference between the two? This article will reveal the answer for you. [more…]

Candlelight Coffee is a naturally processed Ethiopian bean from the LevelUp series by Ninety Plus, named for its flavor profile. It comes from the Sidama region, and its name means "the best way" in the local dialect. This article begins with the background of the Ninety Plus brand, then outlines Candlelight's origin characteristics, flavor expression, and roasting approach. It also documents a grind size comparison experiment conducted by Front Street Coffee using the same batch of beans, examining how different grind coarseness affects TDS concentration and the drinking experience. The article also organizes the N2, H2, and W2 labeling logic that Ninety Plus uses to classify flavor directions, helping coffee enthusiasts understand what makes this bean unique and how to adjust their brewing. [more…]

Wetting the filter paper before brewing coffee is almost a standard step for all pour-over enthusiasts, with the usual goals of making the filter paper fit snugly, removing paper dust, and, if hot water is used, warming the cup along the way. However, most tutorials rarely discuss in depth how much the degree of fit between the filter paper and the dripper actually affects the final taste. Front Street conducted two sets of controlled experiments, using V60 and KONO drippers respectively, paired with filter papers in different states of fit for brewing, and tasted and compared them one by one. The experiment used the floral-fruity Front Street · Gedin Gedin and the nutty-sweet Front Street · Brazil Red Bourbon, and the results showed that a poorly fitting filter paper significantly changes the flow rate, which in turn affects the extraction yield and concentration, producing noticeable differences in mouthfeel. [more…]

Water temperature is an extremely critical part of pour-over coffee extraction. It not only determines the degree to which coffee compounds are dissolved, but also directly influences the final flavor direction. Through a comparative experiment at Front Street Coffee using the washed beans of the Yirgacheffe Guddina Cooperative, this article brews at five water temperatures—80°C, 86°C, 90°C, 93°C, and 96°C—observing the changes in acidity, sweetness, tea-like character, and astringency, and offers practical advice on choosing water temperature according to roast level. At the same time, starting from the lignocellulose structure of coffee beans and the structure of soluble aroma molecules, it explains why different water temperatures bring about completely different flavor layers, helping you avoid over-extraction bitterness or under-extraction blandness in your daily brewing. [more…]

When tasting a new bean, why is it recommended to choose a hot brew first? This article delves into the flavor differences of black coffee made by pour-over, French press, siphon, and other methods under hot brewing and iced brewing from the perspectives of extraction yield, concentration, water temperature parameters, and so on. Taking pour-over coffee as an example, the article specifically compares the different settings of hot brewing and iced brewing in terms of coffee-to-water ratio, grind size, water temperature, and other parameters, and explains why iced brewing often requires sacrificing part of the extraction yield in exchange for higher concentration. At the same time, it also explores the influence of temperature on aroma, taste, and aftertaste, explaining why hot coffee can more fully present the complete picture of a bean. [more…]

The French press is the go-to starter device for many coffee enthusiasts—simple to operate, yet capable of brewing a full-bodied, rich cup. Drawing on Front Street Coffee's practical experience, this article explains in detail the history of the French press and the key points to watch during brewing, including grind size, preheating the vessel, coffee-to-water ratio, and plunging technique. It also compares light-roast, medium-roast, and dark-roast beans in experiments to analyze which kinds of coffee beans are better suited to the French press's immersion extraction method, and offers Front Street brand purchasing recommendations to help you easily make a balanced, delicious cup of coffee at home. [more…]

Ice drip coffee and cold brew coffee are two common methods of making cold coffee, and the two differ noticeably in production process, extraction time, and final flavor. Front Street Coffee conducted a synchronized experiment using the same sun-dried Huakui coffee beans, comparing the production methods and resulting performance of ice drip and cold brew in an all-round way, from grind size calibration to powder-to-liquid ratio setting, and then to extraction time and post-processing methods. The experimental results showed that ice drip coffee was clear and bright, with a clean and refreshing mouthfeel, carrying fermented notes and a faint berry-like sweet acidity; cold brew coffee, by contrast, had a full-bodied mouthfeel and uniform flavor, with prominent fruity sweetness and a weaker fermented note. This article will analyze in detail the differences in production methods between the two types of cold coffee, the experimental plan, and the flavor comparison results, to help coffee enthusiasts more clearly understand the characteristics of both and the basis for choosing between them. [more…]

If you want a refreshing iced coffee in the summer, the AeroPress is a device worth trying. It combines immersion, paper filtration, and pressure extraction to produce a clean-tasting, high-concentration coffee liquid. This article documents the entire process of an AeroPress iced coffee experiment using Front Street Yirgacheffe washed Gedingding and Nicaraguan beans, including the bean selection approach, specific brewing parameters, and operating steps. By adjusting the grind size, water temperature, and coffee-to-water ratio, then cooling and diluting with ice cubes, the result is a cup of iced coffee with balanced acidity and sweetness and a fresh mouthfeel. The article also shares bean recommendations for different flavor preferences, for coffee lovers' reference. [more…]

Coffee aroma is volatile, and the higher the temperature, the faster it dissipates, so some have proposed using low-temperature containers to lock in the aroma. Front Street Coffee compared three types of pour-over coffee vessels—a high-temperature cup, a room-temperature cup, and a frozen cup—to test whether cup temperature truly affects coffee aroma and flavor performance. The experiment used Kenya Asaliya coffee beans with uniform brewing parameters, and the results showed that cup temperature mainly changes the temperature of the coffee when it enters the mouth, rather than the amount of aroma, but temperature differences do indeed cause noticeable changes in flavor perception. This article will present the experimental process and conclusions in detail, and offer cup selection suggestions for different weather conditions. [more…]

In the preparation of iced pour-over coffee, should the ice be placed into the server in advance, or added only after brewing is complete? This question appears to concern only the order of operations, yet it may affect the cooling speed of the coffee liquid, the retention of aroma, and the final concentration. Front Street Coffee used a washed Geisha from Colombia's Finca La Divisa as a sample, and by controlling the coffee-to-water-to-ice ratio, grind size, water temperature, and brewing technique, conducted a comparative tasting of the two methods—"ice first" and "ice after"—while recording temperature and flavor changes at different time points. The experiment attempted to answer: does the order of adding ice truly produce a perceivable difference, or is it merely an illusion caused by the time gap? [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…]

Espresso extraction involves numerous variables, and portafilter temperature is often overlooked. Front Street Coffee designed a comparative experiment to address the question of "whether the hot or cold brew head affects tamping force": keeping dose and yield fixed while only changing the portafilter temperature, recording time, concentration, flavor, and milk-coffee performance. The experiment used Front Street Sunflower Warm Sun Blend, and the results showed that although temperature did not significantly change the extraction yield, it clearly steered the flavor direction—a preheated portafilter made the full-bodied feel and winey notes more prominent, while a chilled portafilter amplified the fruity acidity and light texture. This article will present the complete experimental data and tasting conclusions, and answer whether tamping force needs to be adjusted with temperature, as well as how to decide on a portafilter preheating strategy based on the coffee bean roast level. [more…]

Among the many variables in pour-over coffee, water temperature has a particularly direct impact on the extraction result. It not only determines the speed and sequence with which flavor compounds are released from the coffee, but also ultimately shapes the acidity, sweetness, bitterness, and body of a cup of coffee. In this article, through comparative experiments conducted by Front Street Coffee using washed Yirgacheffe beans, five water temperature groups of 80°C, 86°C, 90°C, 93°C, and 96°C were used for brewing, recording the flavor differences and analyzing the relationship between water temperature and extraction yield and concentration. At the same time, the article also provides the recommended water temperature ranges for light-roasted and dark-roasted coffee beans in daily brewing, helping coffee enthusiasts make more suitable choices for different beans. [more…]

How exactly should the coffee-to-water ratio for pour-over coffee be set? How much water is actually needed for 15 grams of coffee grounds? This is a common confusion for many enthusiasts. Starting from a controlled experiment at Front Street, this article visually demonstrates how the coffee-to-water ratio affects coffee strength: with all other conditions unchanged, brewing at three ratios of 1:10, 1:15, and 1:20 yielded measured strengths of 1.93%, 1.35%, and 1.04% respectively. Through this set of data, you will clearly understand the inverse relationship between water volume and strength, and learn to adjust your own brewing plan accordingly. [more…]