Which pour-over coffee extraction methods work best?

Six pour-over techniques come up again and again: one-cut flow, three-stage, the 4:6 method, three-temperature brewing, volcano pour and the stirring method. They differ mainly in how water is staged and how much the coffee bed is disturbed. One-cut flow splits into a bloom and a single remaining pour, using 15 grams of coffee and 225 milliliters of water for roughly a two-minute extraction.

Extraction order matters because coffee releases acidity first, then sweetness, and bitterness last. The three-stage method pours in stages to steer that sequence and is one of the more commonly used approaches. Beginners can start with a simple staged pour, while experienced brewers may adjust temperature or add stirring to shift body and clarity in the finished cup.

The charm of pour-over coffee lies in its ever-changing brewing methods, with different techniques bringing out entirely different flavor expressions. This article will systematically organize six common pour-over techniques—one-cut flow, three-stage, four-six method, three-temperature brewing, volcano pour, and stirring method—analyzing each one from water-pouring logic and parameter settings to flavor direction. Whether you are a beginner just getting into pour-over or an advanced player seeking a breakthrough, you can find a key that suits you. At the same time, Front Street will also share its most commonly used three-stage brewing experience to help you understand the underlying principles of flavor release, so you can draw inferences and apply them flexibly.

Among the many ways to make single-origin coffee, pour-over brewing techniques can be described as diverse and varied. For example, one-cut flow, three-stage, volcano pour, variable-temperature brewing, and stirring method are all frequently mentioned techniques. Today, let's get to know these common pour-over brewing methods one by one.

1. One-Cut Flow One-cut flow and single-pour are not exactly the same. Single-pour means pouring all the target water in one go; while one-cut flow is split into two stages, with the first stage used for blooming and the second stage pouring the remaining water all at once. Because the theory is simple and the operation is intuitive, this technique can be seen on many occasions.

Its name also has quite a background—"one-cut flow" comes from a school of Japanese swordsmanship. The reason for this naming is probably that the pouring stages are like being cut apart by a single sword strike, thus divided into two stages.

Taking 15 grams of coffee and 225 milliliters of water as an example, the staged water amounts for one-cut flow are 30 milliliters for blooming plus 195 milliliters poured all at once, with a total extraction time of about 2 minutes. The advantage of this technique lies in stable extraction and a clean flavor, because it does not overly touch the later-stage substances.

2. Three-Stage This is the brewing technique Front Street uses most often—the "three-stage." The dissolution rates of different substances in coffee vary greatly. Simply put, the order in which hot water releases flavors is first acidity, then sweetness, and finally bitterness. Staged pouring is meant to extract the aromatic substances in coffee as fully as possible.

Also taking 15 grams of coffee and 225 milliliters of water as an example, the three-stage is divided into 30 milliliters for blooming, 95 milliliters for the first pour, and 100 milliliters for the second pour, with a relatively longer extraction time.

Apart from the blooming stage, under the same coffee-to-water ratio, the more pouring stages there are, the more times the coffee bed is washed, and the time will be correspondingly extended. Coffee extracted by the three-stage method can dissolve flavor substances more fully, with richer layering and higher compatibility.

3. Four-Six Method The "four-six method" was invented by Japan's Tetsu Kasuya. The idea behind his creation of this method is that "anyone can brew delicious coffee." Therefore, this method is very simple. It does not require particularly stable water control, nor does it require a deep understanding of brewing. As long as you operate according to the formula, you can brew a good cup of coffee.

Tetsu Kasuya's understanding of the four-six method is: the first two pours account for 40% of the total water volume, mainly determining the direction of the coffee's flavor and guiding acidity and sweetness into balance; the remaining three pours account for 60%, determining the strength of the coffee's mouthfeel, that is, its body.

The most commonly used amount of coffee for the four-six method is 20 grams, with 300 milliliters of water, brewed in five pours of 60 milliliters each, with a 45-second interval between pours (including pouring time).

Although Tetsu Kasuya says it is simple, quite a few people have a high failure rate after using the four-six method, with the problem mostly coming from over-extraction. Because the extraction time is longer, many people do not adjust the grind size and directly brew with a regular grind, ultimately leading to over-extraction.

Therefore, the grind needs to be adjusted coarser to compensate for the over-extraction risk brought by the long extraction time. Front Street generally uses coarse particles with a 50% pass rate through a No. 20 sieve. After long extraction, coffee brewed with such particles has a full-bodied mouthfeel that regular coffee does not have.

4. Three-Temperature Brewing Method Invented by Wu Zelin, the three-temperature brewing method belongs to variable-temperature brewing. As the name suggests, it uses different water temperatures for brewing. Based on 16 grams of coffee, he uses 240 milliliters of water and brews in four pours of 40 milliliters, 60 milliliters, 60 milliliters, and 40 milliliters respectively.

The first two pours use a water temperature of 94°C, the third pour drops to 90°C, and the final pour uses 80°C, forming a stepped variable-temperature extraction.

The idea behind variable-temperature extraction is not hard to understand: use a higher water temperature to extract the rich flavor substances in the early stage, then finish with a lower water temperature to avoid the over-extraction risk brought by continuous high-temperature extraction.

However, this brewing method is somewhat difficult and requires a large amount of brewing testing to find the temperature standard suitable for the current coffee beans. Once a suitable temperature plan is established, you can ultimately obtain a cup of coffee with a strong flavor.

5. Volcano Pour Volcano pour comes from Japan. Its name comes from the relatively large bulge formed by carbon dioxide in the coffee beans and the fine coffee grounds on the surface, which looks like a large mountain, while hot water poured into the center accelerates the coffee grounds' degassing, like a volcanic eruption, hence the name.

It is more suitable for dark-roasted coffee beans, because only dark-roasted beans can release enough gas to form a mountain shape. Use a fan-shaped dripper, with 30 grams of coffee. The more coffee there is, the better the volcano visual effect, and the grind should be slightly coarser.

Then brew with 300 milliliters of hot water (1:10 coffee-to-water ratio). First bloom with hot water at twice the coffee amount for 30 seconds, then repeatedly pour in the center in multiple small, gentle pours. There is no limit to each pour. When the water level begins to drop, you can proceed to the next pour until the target water amount is finished.

Volcano pour has two distinctive advantages: first, it is highly ornamental, allowing you to enjoy a visual feast while brewing; second, the brewed coffee has a balanced mouthfeel, high sweetness, and no bitterness. Friends who like dark-roasted coffee should give it a try.

6. Stirring Method The rise of the stirring method originated from 2012 World Brewers Cup champion Matt Perger, who used this technique in the competition and won. He later uploaded a video to a foreign video website, in which during the blooming stage he used a wooden stick to quickly stir first up and down, then left and right, and then up and down again.

The purpose of stirring is to make the coffee grounds tumble under the force of stirring, so they are evenly wetted by water and ultimately achieve balanced extraction. For example, during the blooming stage, without stirring, the poured water only slowly penetrates downward, causing the lower part of the coffee bed to lack enough time to bloom and degas, which then requires increasing the impact force of the first pour to compensate for extraction.

But the stirring technique is relatively difficult. Coffee fines will migrate downward to the bottom of the dripper due to the swirling flow created by stirring, easily causing clogging. Second, there is no unified technique or force; everyone stirs in their own way, and one person's stirring cannot be borrowed by another. Many only look the same, while the actual force and direction are completely different. Therefore, when using it, you must fully understand the force and manner of stirring, as well as whether the bean characteristics can adapt to it, before choosing to use it.

In the end, all brewing methods are actually adjusted and changed around the release order of the flavor substances acidity, sweetness, and bitterness. Once you understand the principle of flavor release, which brewing method to use is no longer the key point. The key point is that you know what taste this brewing method will bring, so you can use it freely. This is also why Front Street has always used the three-stage as its regular brewing method.

The above content is compiled by CoffeeHunters, a coffee news website.