Wednesday, September 16 2026

Coffee Extraction | What Are Over-Extraction and Under-Extraction in Pour-Over Coffee? What Are the Signs of Under-Extraction and Over-Extraction in Pour-Over Coffee?

Front Street Coffee has found that many friends always run into this problem when they first start learning coffee brewing: they find that the coffee they brew doesn't taste good, but they can't quite say exactly what's wrong with it. To be honest, if we want to brew a good cup of coffee, besides learning the underlying logic of brewing and mastering the correct extraction parameters, [more…]

Espresso Extraction Yield | What Is Golden Cup Extraction? What Factors Affect the Flavor of Espresso Extraction? How Is Coffee Extraction Yield Calculated?

For more specialty coffee knowledge, please follow our WeChat public account: Front Street Coffee (FrontStreet Coffee). Those who have read Front Street's popular science articles may have noticed that Front Street rarely specifies exact extraction times the way it does when explaining pour-over coffee, because espresso extraction is about more than just [more…]

Pour Over Coffee Flavor | What Does High Concentration, Low Extraction Mean in Pour Over Coffee? Which Coffee Beans Are Suitable for High-Concentration, Low-Extraction Brewing?

Here it comes, here it comes. Today Front Street is going to share with you a brewing approach—high concentration, low extraction. This brewing method can minimize the bitterness of the coffee to the greatest extent, bringing the coffee to a nice flavor performance. What is high concentration, low extraction? Front Street will give a brief introduction here; it all still has to start from this "Golden Cup extraction [more…]

Espresso Extraction Parameters | What is the golden extraction ratio for espresso? What are the specific steps for extracting espresso?

Front Street Coffee has always emphasized that the extraction parameters for pour-over coffee have a significant impact on the cup, and for espresso the impact is even greater. You should know that factors such as the concentration and extraction time of espresso are more demanding than those of pour-over coffee, and the slightest [more…]

Espresso Brewing Standards | What Are the Common Espresso Extraction Problems? How to Understand Under-Extraction and Over-Extraction?

What is Espresso? Espresso, also known as "Espresso," is a coffee beverage or Italian-style coffee base originating from Italy. It is coffee that is rapidly extracted under high pressure. Traditionally, a single shot of espresso has a volume of about one ounce. The internationally accepted technical standard is as follows: around 7 grams of [more…]

Espresso Extraction | What Is the Ideal Water Temperature Setting for an Espresso Machine? Does Water Temperature Affect Espresso Extraction?

For more specialty coffee knowledge, please follow: Front Street Coffee (Frontsteet Coffee). In the past, when Front Street shared knowledge about espresso extraction, it focused on parameters such as grind size, dose, ratio, extraction time, and pressure, and also provided in-depth analysis of steps like receiving the grounds, distributing the grounds, and tamping. [more…]

Espresso Extraction Principles | How to Extract Espresso with a Semi-Automatic Coffee Machine? What Factors Affect Espresso Extraction Parameters?

For more specialty coffee knowledge, please follow our WeChat official account: FrontStreet Coffee. Front Street has noticed that many friends have fallen in love with espresso topped with golden crema and hope to make it at home as well. Compared with pour-over, espresso is made using steam pressure. [more…]

Espresso Extraction Principles | Why Can't Espresso Be Extracted Twice? What Are the Factors Affecting Espresso Extraction?

For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). Before opening for business each day, every coffee shop's task is to dial in a qualified and delicious espresso. We know what delicious means, but what is a qualified espresso? Today Front Street [more…]

Over-extracted Coffee | Why Does Brewed Coffee Taste Bitter? How Can Coffee Beginners Avoid Over-Extraction When Making Pour-Over Coffee?

Many friends just starting out always face the trouble of over-extraction! So-called "over-extraction" refers to excessive extraction. In a coffee bean, the substances that can be dissolved out by water make up about 30% of the total. Although there is only this much, we cannot dissolve everything out. Because inside, besides [more…]

Coffee Brewing Time | Why Do You Need to Time Your Pour-Over Coffee? What Factors Affect the Extraction Time When Brewing Coffee?

When brewing the vast majority of coffees, we always casually press the timer function that comes with the scale to start counting time—this is something that seasoned baristas have emphasized since the very beginning. But for some friends, this behavior is incomprehensible, because they believe that recording time has no effect on the coffee. [more…]

The Principles of Italian Coffee Extraction | What Are the Characteristics of Espresso Blends and Roasting? An Introduction to Espresso Dose-to-Yield Ratios, Grind Size, and Extraction Parameters

For more specialty coffee knowledge, please follow our WeChat official account: Front Street Coffee (FrontStreet Coffee). Italy is a country of coffee culture. The espresso that has spread around the world is the soul of coffee and a treasure Italy has given to the world. Espresso, as its name suggests, is a [more…]

Espresso Full Analysis: Extraction Principles, Preparation Process, and Key Operational Points

Espresso is a small amount of concentrated, pure black coffee extracted by forcing hot water under high-pressure steam rapidly through a puck of coffee grounds, with a golden layer of crema on its surface. Although it rarely appears alone on café menus, it is the base of common drinks such as Americano, latte, and cappuccino, and can be called the soul of a coffee shop. Starting from the definition and characteristics of espresso, this article will sort out its historical evolution and ideas for choosing blend beans, and explain in detail the complete steps for making espresso at Front Street Coffee stores, including dose, liquid yield, time control, and operational details such as distribution and tamping. Finally, it summarizes the key variables affecting extraction flavor and daily cleaning points, helping coffee enthusiasts systematically understand the logic behind a high-quality cup of espresso. [more…]

Standard Espresso Extraction Time | What's the Difference Between Americano and Espresso? What Factors Affect the Flavor of Espresso?

Espresso Extraction Standard Time - The Difference Between Americano and Espresso. Front Street Coffee has noticed that many friends have fallen in love with espresso topped with golden crema and hope to make it at home. Compared with pour-over, espresso is made using steam pressure, with scalding hot water passing through the coffee grounds to brew a small [more…]

Bloom Duration | Does blooming coffee grounds for too long affect the coffee's flavor? Does a longer bloom increase the extraction yield of pour-over coffee?

Recently, a friend came across a post online: "If the blooming time is too long, it's easy to brew coffee that is under-extracted." Obviously, this statement goes against our long-standing understanding of blooming. Because as everyone knows, the purpose of blooming is to release the carbon dioxide in the coffee grounds, allowing us to more easily extract the coffee. [more…]

Moka Pot Coffee | Why does coffee brewed with a moka pot taste burnt and bitter? How can you avoid over-extraction in moka pot coffee?

Front Street Coffee has found that many friends are troubled by the problem of Moka pot coffee often being over-extracted. Every time Front Street Coffee shares a tweet related to the Moka pot, friends leave comments like: "How can I avoid over-extraction in Moka pot coffee?" or "Why is the extracted coffee so bitter?" Indeed, compared to its [more…]

Espresso Extraction Principles | What techniques are there for extracting delicious espresso? Recommended dark chocolate nutty espresso blend beans

For more specialty coffee knowledge, please follow our WeChat official account: FrontStreet Coffee. Italy is a country of coffee culture. The espresso that has spread across the globe is the soul of coffee and a treasure Italy has given to the world. Espresso, as the name suggests, is a [more…]

Coffee Extraction | What's the difference between drip and immersion extraction? Does water temperature affect coffee flavor? Can drip bag coffee be used to make cold brew?

Because of their high quality and the convenience of brewing, more and more people are keeping a few packs of Front Street's drip coffee bags at home and in the office. As the seasons change, many regions are already starting to move into summer, and besides being brewed hot, drip coffee bags can actually be made into cold brew iced coffee too! In this article, Front [more…]

Standard Espresso Practice | Is There a Big Difference Between Espresso Extraction Standards and SCAA Golden Cup Extraction? What Are the Characteristics of Different Types of Italian Coffee?

For more specialty coffee knowledge, please follow our WeChat official account: FrontStreet Coffee. When it comes to brewing coffee, many people like to ask how many grams of coffee grounds to use and what the coffee-to-water ratio should be. Ultimately, what people really care about is the coffee extraction rate. Need [more…]