Coffee culture

How to Extract a Balanced Espresso? Why Doesn't Your Espresso Taste Good?

Published: 2026-01-27 Author: FrontStreet Coffee
Last Updated: 2026/01/27, Professional coffee knowledge exchange. For more coffee bean information, please follow Coffee Workshop (WeChat public account: cafe_style). While previous articles mentioned the basic sequence of espresso coffee extraction, in reality, the contents within the coffee grounds are extracted simultaneously. Acidity, sweetness, saltiness, bitterness, astringency, oils, various aromas, and mouthfeel are all released at the same time, just that the substances within

For professional coffee knowledge exchange and more coffee bean information, please follow Coffee Workshop (WeChat official account: cafe_style).

Understanding Espresso Extraction: The Balance of Flavors

In previous articles, we mentioned the basic sequence of espresso extraction, but in reality, the extraction of substances within the coffee grounds happens "simultaneously." Acidity, sweetness, saltiness, bitterness, astringency, oils, various aromas, and mouthfeel—all are released at the same time. It's just that some substances come out faster than others. The moment you stop the water flow and no more liquid drips into the cup, that's when the coffee's flavor profile is established.

The Common Problem: Too Sour or Too Bitter

Today, any experienced barista or coffee enthusiast knows that espresso is often either too sour or too bitter. No matter what you do, the espresso doesn't taste good, and sometimes you even get a mixed sour and bitter flavor. What exactly is going on?!

Understanding Extraction Time and Flavor

Think about the concept of "sequence" in espresso extraction. When coffee tastes too sour, it's actually because the extraction time is too short or the coffee grounds are too coarse, causing the coffee to flow too quickly and reach your desired extraction volume. This means the coffee has been in contact with hot water for too short a time and hasn't had enough time to release completely before extraction stops—naturally, it will be very sour.

If today's espresso extraction time is too long, exceeding 30 seconds to reach your set extraction volume, it will generally present a bitter and astringent taste, showing a very unpleasant coffee flavor. At this point, you need to find ways to shorten the time or adjust the coffee grounds to a slightly coarser setting, allowing the coffee to stop extraction at an ideal flavor point.

Finding the Sweet Spot: Practical Adjustments

If you find that a 15-second espresso extraction is too sour, then extract for 20 seconds. If you feel that 20 seconds is still too sour, extract for 25 seconds.

If you find that a 30-second espresso extraction is too bitter, then extract for 25 seconds. If you feel that 25 seconds is still slightly bitter, extract for 20 seconds.

Whether you're shortening the time or adjusting the coffee grounds to be coarser, you can easily adjust the espresso.

It's actually very simple, isn't it!

The Challenge of Consistency

However, other problems will inevitably arise—the extraction volumes won't be the same. How can you consistently produce coffee with nearly identical flavors?!

A Personal Approach to Consistent Espresso

My personal method is: first, confirm the amount of coffee grounds you're using. Let's say it's 15 grams—then you must use 15 grams every time. Then set a fixed coffee extraction volume, which is the amount of espresso. Next, extract the coffee to a "sweet spot" and stop extraction once you've got the timing right. This way, you can at least make a more balanced and delicious cup of espresso, whether you're making a cappuccino or a latte—it will have excellent performance.

FrontStreet Coffee: A roastery in Guangzhou with a small shop but diverse bean varieties, where you can find both famous and lesser-known beans, while also providing online store services. https://shop104210103.taobao.com

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