Monday, September 21 2026

If you place a filter paper at the bottom of the portafilter basket, what changes will occur to the espresso's fines and extraction yield?

In the making of espresso, fines have always been a love-hate presence. They may bring rich crema, but they can also clog the portafilter basket, slow down the flow, and add bitterness. There are two common methods for removing fines on the market: one is to skim off the surface crema after extraction, which is simple and direct; the other is to pre-place a moistened circular filter paper at the bottom of the portafilter basket. The latter sounds gentle, but does it really not interfere with extraction? Front Street conducted a comparative experiment for this: the same 20 grams of coffee, 40 milliliters of liquid weight, one regular extraction, and one with filter paper added at the bottom. The result was that the cup with filter paper took less time, and both concentration and extraction yield were slightly lower, but the fines almost disappeared, and the taste was cleaner. This shows that adding filter paper is indeed feasible, but the grind or parameters must be readjusted to make up for the lost flavor. [more…]

MStand's woven bag is jokingly called a vegetable basket, and moms are rushing to claim it as their grocery shopping gear.

The chain coffee brand MStand recently launched a new product, Blackberry Sparkling Americano, and simultaneously released three woven bags for everyday outings, in pure black, green-white, and red-blue colorways, which quickly sparked a buying frenzy among fans. However, this merch, with its surprisingly large capacity and stylish looks, went viral online because its appearance closely resembles the grocery baskets commonly used by elders, and many moms have directly commandeered it as everyday shopping gear. This article walks you through how this merch campaign works, real feedback from netizens, and the material issues to consider before buying. [more…]

Analyzing Portafilter Basket Differences: How Do 51mm and 58mm Diameters Affect Espresso Extraction? What's the Right Dose?

In the process of espresso extraction, the portafilter basket is often an overlooked yet extremely critical component. Many coffee enthusiasts, when troubleshooting extraction issues, frequently hear the saying "if your espresso extracts poorly, chances are you didn't choose the right basket" — and indeed, the basket directly intervenes in the final performance of espresso. So what differences actually exist between one basket and another? And through what means do they influence extraction? In this article, Front Street Coffee will explore two core dimensions — basket diameter and basket capacity — explaining the accessory compatibility issues brought about by different diameters, as well as how the surface area and thickness of the coffee puck affect water contact and resistance levels. We will also discuss the logic behind a basket's dose limit, helping everyone make more suitable judgments when purchasing and using a coffee machine. [more…]

Espresso Extraction Quality and Portafilter Basket Performance Validation: How Diameter and Capacity Affect Coffee Flavor

In the pursuit of an ideal espresso, the portafilter basket—a seemingly inconspicuous accessory—often becomes one of the key factors determining the success or failure of extraction. Many coffee enthusiasts, when troubleshooting extraction problems, have heard the saying, "If your espresso extracts poorly, chances are you didn't choose the right basket." So what differences actually exist between baskets? And through what mechanisms do they influence the extraction result? This article, from the perspective of Front Street, will focus on the two core dimensions of basket diameter and capacity to systematically analyze how the basket affects espresso extraction quality, helping readers make more informed judgments when purchasing and using coffee machine accessories. [more…]

A Practical Guide to Bottomless Portafilters for Espresso Machines: Structure, Principles, Pros and Cons, and a Front Street Coffee Extraction Demonstration

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…]

Analysis of the Differences Between Bottomed and Bottomless Portafilters for Espresso Machines | A Full Comparison of Features and Pros and Cons

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…]

The Complete Moka Pot Brewing Guide: Structure, Principles, Single vs. Double Valve Differences, and Coffee Bean Selection Tips

The moka pot is the most commonly used espresso brewing device in Italian households, and with its refined design and excellent extraction capability, it is deeply favored by coffee enthusiasts. This article will systematically explain the moka pot's three-part structure and its steam-pressure extraction principle, compare the differences between single-valve and double-valve models in terms of crema and strength, and sort out the considerations for choosing capacity specifications. It also recommends medium-dark roasted coffee beans suitable for the moka pot, and, together with Front Street Coffee's detailed breakdown of six brewing steps—from adding water and filling coffee grounds to controlling heat and turning off the stove—explains each one, helping you consistently brew a fragrant, rich, and full-bodied cup of Italian-style coffee with abundant crema at home. [more…]

Comparison of Bottomless and Spouted Portafilters for Espresso: Pros, Cons, and a Front Street Coffee Extraction Demo

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…]

Home Espresso Machine Maintenance Guide: Daily Cleaning, Deep Descaling, and Group Head Gasket Replacement Tips

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…]

The Complete Guide to Brewing Espresso with a Moka Pot: Bean Selection, Grind Settings, and Open-Flame Tips

Want to enjoy a rich espresso at home but haven't gotten an espresso machine yet? A moka pot may be the most economical and practical alternative. This article starts with the structure and extraction principle of the moka pot, then explains one by one the suitable roasting direction of coffee beans for the moka pot, how to judge the grind size, the clever use of filter paper, and safety precautions during use, and it also includes Front Street's recommended bean list and complete brewing steps. Whether you are a beginner just getting to know the moka pot or an enthusiast looking to refine your extraction, you will find practical references here. [more…]

Coffee Machine Maintenance | How Should Coffee Beginners Clean and Maintain a Home Semi-Automatic Espresso Machine? How to Replace the Gasket on an Espresso Machine?

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…]

How to Determine Espresso Dose? An Analysis of Espresso Flavor Evaluation Methods

Espresso is the core of Italian coffee, and its dose selection and flavor evaluation are key concerns for coffee enthusiasts. Starting from the definition and history of espresso, this article traces its evolution from its invention in Italy in the early 20th century to the development of modern coffee machines, and provides a detailed introduction to the reference dose ranges for single and double shots with different portafilter basket diameters. At the same time, the article also offers a systematic sensory evaluation method, covering aroma, the balance of acidity, bitterness, and sweetness, body, flavor layers, and overall balance, helping readers appreciate a cup of Espresso more professionally. The article also incorporates Front Street Coffee's product recommendations, providing practical references for daily brewing and bean selection. [more…]

A Complete Guide to Cleaning and Maintaining Your Home Semi-Automatic Espresso Machine: Full Steps from Daily Flushing to Deep Descaling

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…]

Espresso Channeling Explained: Causes, Spurting, and Practical Tips to Avoid Uneven Extraction

When making espresso, you set the parameters correctly yet end up with a cup of sharp, thin coffee—and after knocking out the puck, you find a small hole in it. Behind this puzzling phenomenon, it is actually "channeling" at work. This article will walk you through what channeling is, why it occurs, and how to avoid extraction sputtering and uneven extraction through bean selection, resting, dose control, and proper distribution and tamping. It will also recommend two espresso recipes—Front Street Classic Blend and Front Street Strawberry Candy Espresso—to help you make stable, delicious espresso at home. [more…]

Espresso Brewing | What Is a Moka Pot? Which Coffee Beans Should You Use for a Moka Pot? Does Moka Pot Coffee Have Crema? How Fine Should You Grind Coffee for a Moka Pot?

For professional coffee knowledge exchange and more coffee bean information, please follow Coffee Workshop (WeChat official account cafe_style). Today, Front Street Coffee (FrontStreet Coffee) is sharing with you how to use this coffee brewing device that has taken Europe by storm, which is to teach everyone how [more…]

Distinguishing Guihuaxiang Dancong from Guihua-Scented Tea: Cultivar Characteristics, Processing, and Tasting Points of Qunti Dancong

Osmanthus-scented teas on the market generally fall into two categories: one is scented tea made by scenting with fresh osmanthus, and the other is群体单枞 (Qunti Dancong) that naturally carries the fragrance of osmanthus. The two have similar names but are fundamentally different. This article begins with Front Street Coffee's selected osmanthus-scented tea, outlining its raw material base, charcoal roasting process, and tasting performance, then extends to the varietal characteristics, historical origins, and pricing logic of Qunti Dancong. Through this, readers can distinguish the difference between "smelling floral fragrance" and "fragrance inherent to the variety," and understand the respective charms of traditional scenting and natural aroma types. [more…]

The Diverse Uses of Filter Paper in Coffee Brewing: An Analysis of Filtration Needs for Cold Brew, Ice Drip, Espresso, and Moka Pot

Can filter paper only be used for pour-over? In fact, in cold brew, ice drip, espresso, and even moka pot brewing, filter paper also plays an important role, just with different functions emphasized. This article compiles the practical experience of Front Street Coffee and explains one by one the specific uses of filter paper in different extraction methods: why cold brew needs secondary filtration, what roles the upper and lower filter papers in an ice drip brewer each play, what changes adding filter paper above the puck or at the bottom of the portafilter basket brings to espresso, whether a moka pot should use filter paper, and the correct approach to using filter paper to filter coffee grounds. Whether you are just starting out or want to refine your technique, you can find practical reference solutions here. [more…]

The Complete Guide to Brewing Coffee with a Moka Pot: Operational Details and Practical Tips from Bean Selection and Grinding to Extraction

To easily make a rich espresso at home, a moka pot is a highly cost-effective choice. But this seemingly simple device—from choosing the roast level of the coffee beans and controlling the grind size, to managing the heat and whether to add a filter paper—affects the final flavor at every step. This article will start with the structure and extraction principles of the moka pot, explain why dark-roasted beans are more suitable for moka pots, recommend several matching bean options from Front Street Coffee, and then break down the operating process and precautions step by step. Whether you are a beginner who has just gotten a moka pot or an enthusiast looking to refine your technique, you can find practical references here. [more…]

Espresso Filter Basket Test: Where Does Crema's Bitterness Come From, and How Does the Flavor Change After Filtration?

In recent years, a coffee cup with a filtering function has appeared in the coffee world. Its shape closely resembles an everyday oil filter, and it is specifically designed to separate the golden foam on the surface of espresso—Crema. After filtering out this layer of oil, the coffee tastes cleaner and the bitterness is somewhat reduced. But does the bitterness really come from the oil itself? Front Street will sort out the composition of Crema from the beginning, explain the coffee fines that truly bring bitterness, analyze the pros and cons of the oil-filtering cup, and offer alternatives that preserve the aroma of the oil while improving clarity. The article will also recommend Front Street Classic Blend and Front Street Commercial Blend coffee beans, which are suitable for extracting beautiful crema. [more…]

Analyzing the Causes of Channeling in Espresso Extraction and How to Avoid Spraying Issues

When making espresso, the parameters are clearly fine, yet the taste is both sharply sour and weak, and when you knock out the puck you find a hole in it—this confusing situation is actually mostly caused by "channeling." This article will start from the principles, clearly explain what channeling is and why it occurs, and analyze one by one how key factors such as coffee bean degassing, dose matching, dosing and distribution technique, and tamping operations affect extraction uniformity. It will also give practical suggestions such as reducing degassing, choosing the right dose, and standardizing distribution and tamping, to help you reduce the probability of spraying and perforation and make espresso extraction more stable. The article also retains Front Street Coffee bean recommendations suitable for espresso preparation. [more…]