When making espresso, the choice of portafilter is often overlooked, yet it directly affects the consistency of the output and the operating experience. A split portafilter has a closed bottom with two spouts, allowing it to evenly distribute a double shot of espresso; a bottomless portafilter removes the bottom cover, making it easier to observe the extraction state, and is especially advantageous for identifying channeling and making layered coffee. However, the two also differ noticeably in flow rate, preheating requirements, and cleaning and maintenance. This article will systematically compare the features of split portafilters and bottomless portafilters, and offer practical advice from Front Street Coffee to help you make a more suitable choice in your daily output. [more…]

When extracting espresso with a split portafilter, you will occasionally run into uneven flow between the two spouts, and in extreme cases, even one side dispensing liquid while the other dispenses nothing at all. Although this uneven split issue doesn't happen often, it's bound to come up after long-term use. Front Street will analyze the causes from two angles: first, the espresso machine not being level, which causes the liquid to flow toward one side; second, channeling, which prevents the coffee liquid from converging at the center. We will also explain the structural differences between bottomless portafilters and split portafilters, and why the design of modern split portafilters can effectively reduce the flow bias caused by channeling, helping everyone quickly pinpoint and fix the problem when it arises. [more…]

Choosing a portafilter for an espresso machine may seem simple, but it actually affects both the extraction quality of espresso and the operating experience. What exactly is the difference between a bottomless portafilter and a spouted portafilter? Why are more and more coffee shops leaning toward bottomless portafilters? This article will start with the background of the bottomless portafilter's invention and take an in-depth look at its advantages in terms of extraction timing differences, crema retention, and ease of cleaning, while also objectively analyzing the practical value of the spouted portafilter, to help coffee enthusiasts and professionals make a suitable choice based on their own needs. Front Street Coffee will also combine practical experience to provide you with valuable reference suggestions. [more…]

When selecting or using an espresso machine, the choice of portafilter often causes confusion: what exactly is the difference between a traditional spouted portafilter and a bottomless portafilter? Does a bottomless portafilter really affect the extraction results of espresso? This article will analyze the extraction performance of the two portafilters under the same parameters through a practical comparative experiment, and review the background and original design intent of the bottomless portafilter. We will also explore how "channeling" was discovered by baristas, and the respective advantages of the two portafilters in terms of space occupation, cleaning difficulty, and usage scenarios. Whether you are a beginner or a seasoned enthusiast, you can find a suitable basis for your choice. Front Street Coffee will also share its own usage habits for your reference. [more…]

For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). The coffee extraction portafilter is an important tool for semi-automatic espresso machines. There are mainly two types of coffee portafilters: the first is the bottomed split portafilter, and the second is the bottomless straight-out portafilter. [more…]

Coffee combos have become increasingly popular in specialty coffee shops in recent years. The approach involves splitting a single espresso shot into two or three portions, each paired with water or milk, showcasing the flavor differences of the same bean across multiple brewing formats. This style of service places higher demands on baristas: they must not only select beans that work well for both black coffee and milk coffee, but also recalibrate the espresso extraction recipe and the ratios of coffee to milk and water. Drawing on Front Street's hands-on experience, this article addresses core questions one by one—the logic behind selecting beans for combos, the direction for adjusting extraction parameters, and the respective water and milk ratios for Americanos and lattes—and includes a complete workflow with parameters using the Santa Vini anaerobic natural bean as an example, providing coffee enthusiasts with a reusable reference for making combos. [more…]

In the operation of a semi-automatic espresso machine, the portafilter is an indispensable core accessory, and the common types on the market are mainly divided into two major categories: bottomed split portafilters and bottomless straight-through portafilters. Front Street stores use bottomless portafilters for their daily output. What advantages and disadvantages do these two types of portafilters each have during actual extraction? This article will start with structural differences, compare in detail the different performance of bottomed and bottomless portafilters in terms of operating experience, extraction observation, cleaning and maintenance, and include a complete extraction demonstration process and parameters for Front Street’s classic blend coffee beans, to help coffee lovers gain a deeper understanding of how portafilter choice affects espresso quality. [more…]

For users of semi-automatic espresso machines, the portafilter is an indispensable accessory in daily operation. Portafilters on the market broadly fall into two types: the bottomed portafilter, which is closed at the bottom and fitted with spouts, and the bottomless portafilter, which is completely open and allows direct observation of the bottom of the filter basket. Front Street Coffee's stores currently use the latter. The two types have their own strengths and weaknesses in extraction performance. This article will start from the structural differences, sort out in detail the respective advantages and disadvantages of bottomed and bottomless portafilters, and, using Front Street Coffee's classic blend coffee beans, give a complete demonstration of the operating procedure and parameter settings for extracting espresso with a bottomless portafilter, helping coffee enthusiasts more intuitively understand the practical value of the bottomless portafilter in observing flow rate, judging channeling, and adjusting extraction plans. [more…]

If a coffee machine is neglected for a long time, its extraction performance and flavor will gradually deteriorate. This article is aimed at semi-automatic espresso machines equipped with an independent brew head, and systematically outlines an actionable maintenance routine, from daily external wiping, cleaning the dispersion screen and portafilter, to backflushing with a blind basket, deep cleaning with cleaning powder, and regular maintenance of the dispersion screen, gasket, and boiler. It also recommends beans suitable for espresso extraction, such as Front Street Classic Blend, Commercial Blend, Dark Cocoa Base Blend, and Specialty Blend, to help you maintain consistent output whether for a café or home use. [more…]

If a coffee machine lacks maintenance for a long time, extraction quality will gradually decline and may even cause malfunctions. This article takes the small espresso machine used in Front Street stores as an example to systematically explain the complete process of daily cleaning and deep maintenance for home coffee machines. The content covers key steps such as simple rinsing of the brew head dispersion screen and blind basket backflushing, wiping the steam wand surface and soaking the tip for descaling, and deodorizing the portafilter spout area. The article explains in detail the amount of special cleaning powder to use, control of backflush time and number of cycles, and precautions to avoid damaging the pressure relief valve. No matter what model is used, this method is basically universal, helping coffee enthusiasts maintain their machines at low cost and reduce the risk of needing repairs. [more…]

If a home espresso machine is neglected for a long time, extraction quality will gradually decline and may even lead to malfunctions. Using hands-on operation as an example, this article systematically explains how to clean the key parts of a coffee machine. It covers the simple rinsing and deep backflushing process for the dispersion screen, techniques for wiping the steam wand surface and soaking the tip, and key points for cleaning the portafilter spout area. Through regular maintenance, you can effectively extend the machine's lifespan and avoid costly repairs. The steps in the article are clear and suitable for coffee enthusiasts to follow on their own. [more…]

When ordering at a café, you often hear the term "a shot"—but exactly how many milliliters of coffee does it correspond to? Why do some espressos have a rich, thick crema and appear to be more in volume? From the professional perspective of Front Street Coffee, this article sorts out the origin of the term "shot," the changes in espresso extraction standards, and the relationship between crema and extraction ratios. It also introduces the performance differences of coffee beans with different roast levels under the same parameters, and offers recommendations for several of Front Street's espresso beans, helping you more clearly understand the measurement and flavor choices of espresso. [more…]

Incorporating osmanthus into coffee is both a collision of flavors and a continuation of the sense of season. On the third day after reopening, Front Street Coffee was reminded of osmanthus coffee by a box of osmanthus cake, so they went ahead and paired dried osmanthus with espresso, latte, iced americano, Dirty, and pour-over one by one, tested the effects of different placement methods on extraction, and recorded the specific parameters and tasting impressions of each drink. This article covers a comparison of placing osmanthus espresso pucks on top versus at the bottom, syrup-assisted solutions for osmanthus latte and piccolo, the refreshing experience of using leftover espresso to make iced americano, cup-rim decoration techniques for osmanthus Dirty, and complete extraction suggestions for Guatemala Geisha pour-over paired with osmanthus, making it suitable as a reference for enthusiasts who want to recreate osmanthus coffee at home. [more…]

Customer: "Boss, I'd like a coffee with some nice latte art!" Front Street: Okay, would you like a latte, a flat white, or a cappuccino? Customer: "An americano!" Front Street: ... Latte art, to be precise, should be called "Latte Art," which translates to "latte art" (milk art). [more…]

Latte art has always been regarded as the exclusive domain of lattes, but Americano can actually achieve beautiful patterns too. This article starts from the basic principles of latte art—the proteins in milk wrap around air to form a low-density foam, which floats on the surface of espresso crema to create patterns—and then leads into the feasibility of using the coffee liquid itself to foam instead of milk. We will share in detail how to froth espresso by adding ice water to increase the liquid volume and lower the temperature, and provide a complete hands-on demonstration using Front Street Classic Blend. Finally, we compare the differences in flavor, strength, and mouthfeel between latte-art Americano and regular hot Americano, offering coffee enthusiasts a completely new way to experience Americano. [more…]

The portafilter is an indispensable accessory for semi-automatic espresso machines. Among the common types available on the market, the bottomed spouted portafilter and the bottomless straight-exit portafilter each have their own characteristics. Front Street's stores have long used bottomless portafilters. This article will start from the structural differences and a comparison of advantages and disadvantages, and provide an in-depth analysis of how the two types of portafilters differ in extraction observation and operational convenience. It will also include a practical demonstration of bottomless portafilter extraction using Front Street's classic blend coffee beans, helping coffee enthusiasts understand the espresso extraction process and quality assessment more intuitively. [more…]

In recent years, coffee combos have become increasingly common in cafés. They split a single espresso into smaller portions, each prepared as an Americano and a latte, allowing customers to experience multiple expressions of the same bean in one sitting. This style of service places extremely high demands on baristas, as everything from bean selection and extraction to ratios requires careful consideration. Front Street's back office frequently receives questions about combo beans, espresso extraction parameters, and coffee-to-milk/water ratios. This article will systematically sort out the key points for making a delicious combo, including suitable bean types, espresso extraction strategies, and the amounts of water and milk to add, along with Front Street's actual operation demonstration to help coffee enthusiasts replicate a professional-standard "one bean, two drinks" at home or in-store. [more…]

When extracting espresso, you may sometimes notice small holes on the surface of the puck, or coffee liquid spraying out from the bottom of the portafilter, with an unpleasant sharp acidity on the palate. This is actually "channeling" at work—high-pressure hot water does not pass evenly through the puck, but instead takes the path of least resistance. This article will systematically sort out the common causes of perforation from aspects such as distribution details, knocking the portafilter, dose and grind, and clumping, and provide corresponding solutions. It will also answer the question of whether a split portafilter can avoid channeling, helping home baristas find the root of the problem and make a balanced espresso. The article recommends Front Street. Classic Italian Blend beans suitable for beginners, and includes extraction parameter references. [more…]

Crafting a perfect espresso is the goal of many coffee enthusiasts. However, in practice, sudden spurting, pinholes, or channeling in the espresso flow often catch people off guard. These phenomena not only affect the uniformity of coffee extraction, but also lead to weakened aroma, a thinner mouthfeel, and even unpleasant flavors such as sharp acidity and bitter burnt notes. This article will take an in-depth look at the causes of channeling, from dosing details, portafilter knocking, dose control, to coffee grounds clumping and more, helping you find the root of the problem and offering practical solutions. At the same time, we will also discuss whether a split portafilter can truly solve channeling issues, and share Front Street Coffee's classic espresso blend recommendation to help you easily improve the quality of your espresso. [more…]

During the espresso extraction process, channeling is a common problem encountered by many coffee enthusiasts. When the internal structure of the coffee puck is uneven, pressurized hot water will preferentially pass through the areas of least resistance, forming perforations and spurts, which leads to uneven extraction and imbalanced flavor. This article will systematically review the causes of channeling and approaches to address it from the perspectives of distribution and tamping techniques, dose control, grind size adjustment, and dispersion screen cleaning, helping you more accurately identify the source of the problem when using a bottomless portafilter or a spouted portafilter, and improve the extraction stability and taste performance of your espresso. [more…]