When brewing pour-over coffee, should you really pre-wet the paper filter? This is a confusion many people encounter when they first get into pour-over. Some insist that wetting the filter is essential, while others brew directly with a dry filter. Which approach is actually more reasonable? The answer isn't absolute—it needs to be judged from three dimensions: how well the filter fits the dripper, the odor of the filter itself, and the storage environment. In addition, when wetting the filter, whether to use cold or hot water also matters—the choice of water temperature directly affects how well odors are removed and how well the equipment is preheated. Faced with the dazzling array of filter products on the market, the differences in flow rate and filtration effectiveness brought by different materials and manufacturing processes are huge. How should beginners choose? Front Street Coffee, drawing on practical experience, sorts out these key questions about pour-over filters one by one to help you make more suitable choices in your daily brewing. [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…]

Before making pour-over coffee, is it really necessary to rinse the paper filter with hot water? This question has long been debated in the coffee community. Some insist that wetting the filter removes papery taste, helps the filter adhere better to the dripper, and preheats the dripper along the way; others believe that modern filter manufacturing has advanced so much that these reasons may no longer hold. This article, from Front Street Coffee's perspective, examines one by one whether the three traditional advantages of wetting the filter still stand, and takes a deeper look at how the water-absorbing properties of a dry filter affect coffee strength, as well as the pre-extraction issues that may arise when coffee grounds come into contact with water early. The final conclusion may surprise you—the difference between a wet and dry filter is actually negligible. [more…]

In pour-over coffee, wood pulp filter papers are almost absolutely dominant, but have you ever noticed another material—non-woven fabric filters? They are actually widely found in the filter bags of drip coffee bags, yet are rarely used on their own for pour-over. This fabric is made from composite fibers through a special process, and its gaps are larger than those of wood pulp filter papers, allowing some coffee oils to be retained and giving the brew a fuller body. However, it also has a troublesome characteristic: after contacting water, it somehow stays dry as if coated with wax, and must be repeatedly rinsed with hot water before it will fit snugly against the dripper. Through actual testing, Front Street Coffee found that non-woven fabric filters are almost the same as wood pulp ones in flow rate, but the brewed coffee is more turbid in color and heavier in flavor, even carrying a slight feel of flannel filter cloth. If you are curious about how this niche filter paper performs, this article will take you through it. [more…]

Front Street recently acquired a Geisha coffee bean from Elida Estate in Panama, processed using the NATURAL-ASD anaerobic fermentation low-temperature slow sun-drying method—the same process used for this year's Panama BOP champion Geisha in the processing category. After the beans were properly rested, we tested brewing with a hollow filter cup, Ice Eye filter cup, cake filter cup, and diamond filter cup, standardizing the parameters to 15 grams of coffee, medium-fine grind, 90°C water temperature, and a 1:15 coffee-to-water ratio, recording the extraction time and flavor performance for each filter cup. Elida Estate is renowned for its sun-dried processing, and this ASD Geisha shines in fermentation aroma, juicy mouthfeel, and layered tea-like notes. Below, we share four specific brewing recipes and comparison results for coffee enthusiasts' reference. [more…]

Should you wet the filter paper with hot water or room-temperature water before pour-over coffee? Does this seemingly insignificant step really affect the final flavor? Many coffee enthusiasts share this confusion. In this experiment, Front Street Coffee used filter holders made of three different materials—resin, ceramic, and copper—and wet the filter paper with either room-temperature water or hot water above 90°C, conducting a comparative experiment under identical brewing parameters. The results showed that wetting the filter paper at different water temperatures does indeed lead to differences in the temperature and concentration of the coffee liquid, and the flavor profile also showed different tendencies toward sweetness and acidity. Through detailed experimental data, this article will analyze the mechanism by which the water temperature used to wet the filter paper affects the extraction process, helping you find the cup that best suits your taste. [more…]

When brewing pour-over coffee, the issue of the filter paper not fitting snugly against the dripper is a common frustration for many enthusiasts, and it is especially prevalent when using conical drippers. Does this problem really affect extraction? The answer is yes. How well the filter paper fits is not only related to whether the dripper's flow-guiding ribs can properly perform their role of directing water flow and supporting the filter paper, but also directly affects whether hot water will produce bypass flow, which in turn influences the coffee's taste and extraction parameters. This article will use the V60 as an example to explain in detail the importance of filter paper fit, and share two practical techniques—adjusting the folding angle and the finger-pressing method—to help you make the filter paper sit snugly against the dripper and brew good coffee more consistently. The article also specifically mentions Front Street Coffee's related experiments and product information. [more…]

In coffee brewing, the choice of filter directly influences the flavor direction. Metal filters, with their unique pore size, retain coffee lipids and aromas while offering the advantages of being eco-friendly and cost-saving, but the issue of fine particles passing through cannot be ignored. In this article, Front Street will focus on a 400-mesh metal filter (corresponding to 38 microns), from analyzing its pros and cons to a practical brewing demonstration, explaining in detail how to maximize its strengths and avoid its weaknesses. Compared with paper filters, metal filters allow water to pass through faster, requiring adjustments to the pouring technique; when brewing Yirgacheffe Gudingding, the lipids brought a richer mouthfeel and a longer-lasting aftertaste. If you also want to try brewing with a metal filter, you might as well follow Front Street's steps to find out. [more…]

To brew a great cup of coffee at home, choosing the right method matters more than buying expensive equipment. This article systematically sorts through several common brewing methods—paper filter drip, flannel filter, steam pressure, siphon, cold drip, and iced coffee—explaining one by one their key operating points, grind size, and flavor characteristics. The content covers key details such as equipment selection, coffee-to-water ratio, water temperature control, and pouring technique, making it suitable for coffee enthusiasts who want to advance their skills. Whether you prefer a clean, bright cup or a rich, full-bodied one, you'll find a corresponding brewing approach here. [more…]

Should you wet the filter paper before making pour-over coffee? This question seems simple, but behind it lies multiple factors such as paper taste, preheating the dripper, and extraction evenness. A barista at Front Street Coffee was once asked by a customer why one filter paper was wetted while the other was brewed directly, when brewing iced pour-over and hot pour-over at the same time. This article will start from the three main purposes of wetting the filter paper—rinsing away off-flavors, preheating the dripper and server, and making the filter paper adhere to the dripper—then further analyze the possible effects of wetting the filter paper, such as hindered blooming and degassing, premature extraction of coffee grounds, and water absorption by the filter paper, and finally explain why hot brewing and iced brewing handle the filter paper differently, helping coffee enthusiasts make a more suitable choice based on actual circumstances. [more…]

The flannel filter cloth holds a unique place in Japanese-style pour-over, but most coffee enthusiasts are more accustomed to paper filters and filter holders in their daily routine. This article begins with the historical origins of flannel, explains why it is widely favored in Japan, and analyzes its fundamental differences from paper filters in terms of material structure and extraction performance. The article also demonstrates in detail the complete steps for brewing dark-roasted beans with a flannel filter cloth, including setting the coffee-to-water ratio, pouring technique, and timing control, and compares the flavor with the same Front Street PWN Golden Mandheling brewed using a Kono dripper with a paper filter, helping readers understand the differences in aroma, mouthfeel, and clarity between the two filtration methods. Finally, it explains why domestic cafés rarely use flannel for their brews, providing a practical reference for coffee enthusiasts. [more…]

In the daily practice of pour-over coffee, some people habitually rinse the paper filter with hot water before brewing, while others place a dry filter directly into the dripper and start pouring. Both approaches have their own rationale, and neither is absolutely right or wrong. When the baristas at Front Street Coffee were making both iced pour-over and hot pour-over at the same time, a customer once asked them about this very question. What practical effects does rinsing the paper filter actually bring? And what impact does skipping this step have on extraction? This article will examine three angles—removing papery taste, preheating the equipment, and helping the filter adhere to the dripper—while also analyzing the problems that wetting the filter may cause, such as obstructing the bloom and degassing, prematurely extracting the coffee grounds, and the filter absorbing water, to help you make a more suitable choice in different brewing scenarios. [more…]

For professional coffee knowledge exchange and more coffee bean information, please follow FrontStreet Coffee. How to choose coffee filter paper? How to use coffee filter paper? What types of coffee filter paper are there? Many enthusiasts buy their own coffee beans, use a grinder, and purchase equipment to brew coffee, all [more…]

Speaking of flannel filter cloth, many friends may have only seen it in some Japanese films and TV dramas or in Japanese-style brewing introduced by bloggers, and have never actually used it. Because compared to filter cloth, the vast majority of people use filter paper and filter cups, this mainstream filtering tool, when brewing coffee. Ways to get to know flannel filter cloth [more…]

In the daily routine of pour-over coffee, filter paper is an almost indispensable consumable. But have you ever wondered why you usually need to rinse the filter paper with water before the official pour? Between the common white filter papers and natural wood-colored filter papers on the market, which one should you actually choose? Regarding the origins of filter paper, the impact of bleaching processes on flavor and health, the classification of sizes and specifications, and how different manufacturing processes affect the flow rate, Front Street will sort through all of it one by one in this article to help you choose the right filter paper and get the most out of every sheet. [more…]

Pour-over coffee has become the top choice for many coffee enthusiasts thanks to its advantages of being clean, free of off-flavors, clear, simple, and safe. This article starts with a horizontal comparison of the French press, the Clever Cup, the AeroPress, and the siphon pot, then sorts out the three truly indispensable conditions for pour-over—coffee grounds, filter paper, and hot water—and takes a deep dive into how the filter paper material affects flavor, debunking the common misconception that "boiling water can't be used to brew coffee." At the end, it includes Front Street's recommended Huakui brewing parameters and flavor description, making it suitable reading for coffee enthusiasts who want to systematically understand the logic of pour-over. [more…]

Coffee filter cups on the market come in a wide variety of materials—resin, glass, ceramic, and metal each have their own fans—but what real impact do different materials actually have on brewing? Many people's first thought is the price difference, but setting aside cost, the most core difference between materials lies in their ability to control temperature. Thermal conductivity determines how quickly heat is transferred, while specific heat capacity relates to how much heat an object can store. Together, these two physical parameters directly change the temperature performance of hot water during the extraction process. Metal conducts heat fastest but also dissipates it quickly; ceramic has a high specific heat capacity but needs thorough preheating; glass performs mildly; and resin, because it absorbs heat slowly, has almost no effect on water temperature. In this article, Front Street Coffee will break down the characteristics of four common filter cup materials one by one, and combine them with the actual differences in flow rate among V60 versions made of different materials, to help everyone understand why you cannot simply copy extraction formulas from the internet, but should instead flexibly adjust your brewing strategy according to the material of the filter cup in your hands. [more…]

In the world of coffee brewing, the choice of filtration medium often determines the flavor direction in the cup. From Turkish coffee, which was mainly boiled before the 19th century, to the filter paper and dripper invented by Mrs. Melitta, to the artisanal use of flannel cloth in Japan, each filtration method carries a different extraction logic. Today, the filter paper, flannel cloth, and metal mesh commonly used in pour-over coffee each have their strengths and weaknesses: filter paper brings a clean and transparent mouthfeel, flannel retains oils and fine particles, achieving a rich and mellow flavor, while metal mesh poses new challenges in terms of pore size and extraction method. Front Street Coffee uses Ethiopian Santa Vini beans for comparative brewing, and by adjusting the pouring technique, reveals the causes of under-extraction with metal mesh and directions for improvement, providing a practical brewing reference for coffee enthusiasts. [more…]

Non-woven filter paper, also known as nonwoven fabric filter paper, has long drawn attention in coffee brewing for its ability to let oils and fine particles pass through and enhance body. Front Street Coffee noticed a special filter paper that differs from conventional non-woven fabric in both appearance and feel—its texture is closer to wood pulp filter paper, smooth with a velvety touch. To figure out what exactly makes this filter paper so remarkable, Front Street Coffee starts with the principles of the material, compares the differences between wood pulp filter paper, special non-woven fabric filter paper, and conventional non-woven fabric filter paper, and observes its performance through tests with room-temperature water, hot water, and coffee liquid. This article will comprehensively explain the composition principles of non-woven filter paper, the definition of nonwoven fabric, and the characteristics of this special filter paper in actual use, helping coffee enthusiasts understand the difference between it and traditional filter paper. [more…]

When brewing pour-over coffee, should the paper filter really be pre-wetted? This question seems minor, yet it can affect the final liquid volume, concentration, and flavor expression. This time, Front Street Coffee used two drippers, the V60 and Origami, along with two types of filters, conical and cake, to conduct comparative brews with wetted and non-wetted filters, comparing the differences one by one from liquid weight and refractometer data to actual tasting. At the same time, the article also explains in depth why the blooming stage should use twice the amount of water as the coffee grounds, and why the portion of liquid that first contacts the coffee grounds has a lower concentration. If you have also agonized over this detail, you may as well follow the experimental data and see it clearly. [more…]