You dialed in your espresso extraction parameters in the morning, but by noon the flow has slowed and become unstable? Besides changes in humidity and switching beans, coffee residue built up inside the group head is often the culprit. Backflushing is the key method for removing this residue—using a blind basket to force water to flow backward through the lines, then combining it with cleaning powder to deep-clean stubborn coffee grime. This article explains in detail the procedures for water backflushing and cleaning-powder backflushing, the number of repetitions, and the daily maintenance frequency, helping baristas maintain stable extraction and avoid off-flavors getting into the cup. [more…]

Many coffee enthusiasts, before brewing pour-over coffee, hear experienced baristas emphasize the step of "seasoning the grinder." But seasoning actually comes in two forms: one is the daily deep cleaning of the grinder, and the other is the "pre-grinding" done before each grind. The two serve different purposes and should not be confused. This article explains in detail why a small amount of beans from the same batch should be used to season the grinder before grinding coffee beans, how residual coffee powder and burr oils affect the flavor of the next cup, and why an air blower cannot replace bean seasoning. At the same time, Front Street Coffee will also offer recommendations on the amount of beans to use for seasoning, helping you present the true flavor of each bean in a purer way. [more…]

I believe baristas must have encountered this problem: in the morning, the espresso extraction parameters are dialed in, but by noon, the parameters are no longer accurate, and the coffee flow rate has noticeably slowed down. Front Street has previously offered explanations for two scenarios regarding this issue. The first is when it rains and the humidity in the air is relatively high, inside the bean hopper. [more…]

Coffee grinding equipment is mainly divided into two categories: manual and electric. Different brands and price points not only affect appearance and grinding performance, but also determine differences in burr structure and particle size distribution. Regardless of which grinder you use, daily cleaning and regular maintenance of the burrs are key to extending the life of the equipment. The static electricity generated during grinding causes fine particles to stick to the metal burrs and the grounds bin. The more frequently it is used, the more residual grounds accumulate, and the oil released by dark-roasted beans worsens the buildup of oily residue. If not cleaned for a long time, old grounds not only produce a rancid oil smell, but also taint new grounds and clog the grinding path. This article will introduce grinder maintenance methods and precautions in detail across three levels: daily quick cleaning, cleaning without disassembly, and regular deep cleaning. [more…]

Many coffee enthusiasts have noticed that after switching on, coffee shops often pour away the first espresso pulled before they begin serving drinks as normal. Behind this seemingly wasteful gesture are actually multiple considerations, including cleaning powder residue, overnight coffee grounds, and machine parameters that have not yet stabilized. But for home users who only make one or two cups a day, is it necessary to copy this practice? Starting from the actual operating habits of Front Street stores, this article systematically sorts out the reasons why the first espresso is discarded, and offers specific advice for home scenarios on whether it needs to be poured out, how to properly handle residual grounds, and how to effectively preheat the coffee machine after deep cleaning, helping you ensure stable flavor in every cup while reducing waste. [more…]

Many coffee enthusiasts have added espresso machines to their homes, but due to a lack of knowledge about cleaning and maintenance, problems such as weakened steam, uneven water flow, and even portafilter leaks begin to appear after the machine has been used for a while. This article systematically organizes maintenance methods for home espresso machines: from the routine cleaning of the steam wand and shower screen after each brew, to using a blind basket to backflush and remove internal residue before shutting down, and then to regularly using specialized cleaning powder for deep treatment of the steam wand, shower screen, and portafilter basket. The article also explains in detail the steps for replacing the brew head gasket after it ages, and reminds readers that water needs to be filtered to prevent scale from damaging the boiler. The article involves practical experience with the machine models used in Front Street Coffee stores, and is suitable for coffee enthusiasts to follow and implement. [more…]

For professional coffee knowledge exchange and more coffee bean information, please follow Coffee Studio (WeChat official account: cafe_style). For more specialty coffee beans, please add our private WeChat: Front Street Coffee (FrontStreet Coffee), WeChat ID: qjcoffeex. With the rise of specialty coffee culture [more…]

The espresso machine is the core equipment of a coffee shop. Regular cleaning not only extends the machine's lifespan but also ensures the consistency of every cup produced. This article focuses on the key step of cleaning the interior of the group head, explaining in detail the specific procedures for quick cleaning, daily backflushing, and long-term maintenance. From judging residue on the dispersion screen to the backflush process using a blind basket with cleaning powder, and then to soaking the portafilter to remove oils, each step has clear requirements for timing and frequency. At the end, it also reminds readers that professional deep maintenance is needed every 1–2 years, making this a worthwhile reference for both coffee enthusiasts and industry professionals. [more…]

When brewing pour-over coffee at home, have you ever tasted the flavor of one bean in a cup of another? This is very likely the work of fine powder residue left inside the grinder. If a grinder is not cleaned for a long time, electrostatic fine powder and dark roast bean oils attached to the metal burrs will accumulate more and more, which not only affects the extraction flavor, but may also clog the passage and shorten the life of the equipment. This article, compiled by Front Street Coffee, systematically explains the maintenance and calibration methods for manual and electric coffee grinders, from simple daily cleaning, no-disassembly cleaning with cleaning tablets, to disassembly deep cleaning and burr wear inspection, helping you determine when a simple cleanup is enough and when deep maintenance is needed, so that every cup of coffee maintains a clean and accurate flavor performance. [more…]

Many coffee enthusiasts operating semi-automatic espresso machines at home will notice a detail: the first espresso extracted right after the machine is turned on is often poured straight down the drain. This is not waste, but an early-tuning routine followed by both professional coffee shops and experienced home baristas. Why exactly can't this espresso be drunk? What systematic preparatory work do coffee shops do before officially opening? What role does espresso cleaning powder play in this? This article will focus on the daily startup routine of espresso machines, explain why the first shot of espresso is discarded, and comprehensively lay out the standard steps for in-store morning tuning, while also explaining the uses of cleaning powder and recommendations for choosing it. The article will also draw on the practical experience of Front Street Coffee to help everyone develop a correct mindset for coffee machine maintenance. [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…]

Last week, Front Street Coffee shared nine details about brewing coffee, among which it mentioned that the grinder needs to be cleaned regularly. So a reader followed up with the question: Can a grinder actually be washed with water? To answer this question, we first need to understand the necessity of cleaning the grinder. The common grinding equipment on the market falls into two categories: manual and electric. Regardless of which type, the daily upkeep and regular maintenance of the burrs directly affect the service life. Accumulated coffee grounds not only cause flavor cross-contamination, but may also clog the passage. This article will detail the cleaning methods for manual and electric coffee grinders across three levels: daily quick cleaning, cleaning without disassembly, and regular deep cleaning, and will also remind you of the applicable conditions and precautions for washing with water. [more…]

If you love brewing pour-over coffee at home, have you ever noticed that your brewed coffee tastes like it's mixed with other beans? This is very likely the work of fine powder residue left inside your grinder. Over time, static electricity causes fine powder to cling to the burrs, and the oils from dark-roasted beans build up as well. Before long, this not only affects flavor but can also clog the chute and shorten the machine's lifespan. So how exactly should you maintain your grinder? How often should you clean it? What's the difference between cleaning a hand grinder and an electric grinder? Can the burrs be washed with water? Front Street Coffee has put together a complete process, from simple daily cleaning to deep disassembly, to help you resolve all your grinder maintenance questions. [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…]

The semi-automatic espresso machine is the core equipment for a café's operation, and its service life depends both on its initial quality and on careful daily maintenance. A qualified barista must not only be able to extract full-flavored espresso, but also understand how to properly clean and maintain the machine. This article systematically outlines the daily and periodic cleaning procedures for semi-automatic espresso machines, covering key steps such as wiping the exterior, flushing the dispersion screen, deep cleaning the portafilter, and backflushing, while also offering specific recommendations for espresso bean selection, helping you consistently produce stable, great-tasting coffee while keeping your equipment in top condition. [more…]

With the growing popularity of home coffee equipment, more and more people are choosing to use a pour-over kettle paired with a small electric grinder to make freshly ground coffee at home. However, using an electric grinder is not simply a matter of plugging it in, turning it on, and dumping in beans—some improper operating habits not only affect the coffee's flavor but can also shorten the grinder's lifespan. Drawing on Front Street Coffee's practical experience, this article shares several key tips for using an electric burr grinder, including "rinsing the burrs" before grinding to avoid flavor transfer, starting the machine before adding beans to protect the burrs, and daily quick cleaning plus periodic deep cleaning as maintenance methods. Whether you are a complete beginner or someone who has been using an electric grinder for a while, these details can help you get the most out of your grinder and keep every cup of coffee tasting consistently good. [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…]

Home espresso machines are becoming increasingly common, but many people overlook the impact of cleaning and maintenance on coffee flavor and machine lifespan. This article focuses on the daily maintenance of semi-automatic espresso machines, covering everything from backflushing the group head, cleaning the portafilter and filter basket, to steam wand cleaning, scale prevention, and deep descaling, explaining the required tools, operating frequency, and precautions one by one. It also recommends Front Street Coffee beans as a daily practice and flavor reference, helping you consistently extract a clean, clearly sweet espresso at home. Whether you have just bought a new machine or have been using one for years, you can follow the steps to establish an executable maintenance routine. [more…]

As coffee culture becomes increasingly widespread, more and more households are purchasing espresso machines, but most users are not industry professionals and know very little about equipment cleaning and maintenance. Failure to clean regularly over time can lead to weakened steam, uneven water flow from the group head, unstable extraction pressure, and even portafilter leaks. In this article, Front Street will systematically share daily maintenance and deep cleaning methods for coffee machines, covering routine cleaning of the steam wand, dispersion screen, and portafilter, as well as deep maintenance essentials such as backflushing the pipes, replacing gaskets, and maintaining the water tank filter—helping your coffee machine run stably for the long term and avoiding unnecessary repair costs. [more…]

Have you ever seen this scene: a barista turns on the machine in the morning, and the first espresso pulled is not drunk, but "ruthlessly" poured down the drain, then they continue to pull the next shot. Guests who see this will ask why. If you're making coffee at home, do you need to do this too? Why is the first cup [more…]