Which Pour-Over Coffee Brewing Technique Fits Your Bean?

Pour-over coffee brewing covers six common techniques: one-cut flow, three-stage, the 4:6 method, variable-temperature brewing, volcano pour, and the stirring method. Each one changes extraction by altering pour timing, water volume per stage, and contact time. Using 15g of coffee to 225ml of water as an example, one-cut flow blooms with 30ml then pours the remaining 195ml at once, finishing in about two minutes.

Dissolved substances leave coffee at different rates, so pour logic decides which of them end up in the cup. The three-stage method, Front Street's usual approach, balances sweetness and acidity by splitting the pour, while the 4:6 method divides water into flavor and strength stages. A 20g to 300ml ratio works for larger brews.

The charm of pour-over coffee lies in the diversity of brewing methods—different pouring techniques bring out entirely different flavor expressions. This article systematically sorts through six common pour-over techniques—one-cut flow, three-stage, 4-6 method, three-temperature variable-temperature brewing, volcano pour, and stirring method—analyzing each one from pouring logic and parameter ratios to flavor characteristics, and explaining their respective suitable scenarios and operational difficulties. Using specific parameters such as 15g coffee to 225ml water and 20g coffee to 300ml water as examples, it helps readers understand the extraction principles behind each technique. At the same time, it retains Front Street Coffee's practical experience with the three-stage method and grind adjustment for coffee enthusiasts to reference and compare.

In the realm of single-origin coffee, pour-over brewing methods can be said to be incredibly diverse. For example, one-cut flow, three-stage, volcano pour, variable-temperature brewing, stirring method, and so on all have their own followers. Today we will sort through these common pour-over brewing techniques.

1. One-Cut Flow

One-cut flow and single-pour are not entirely the same. In single-pour, the target amount of water is poured all at once, while one-cut flow splits it into two stages: the first stage is for blooming, and the second stage pours the remaining water all at once. Because the theory is clear and the operational threshold is low, this technique can be seen on many occasions.

Its name also has an interesting origin—"one-cut flow" comes from a Japanese swordsmanship school. The reason for this naming is probably because the pouring is divided into two stages, with the middle break appearing as if severed by a single sword stroke.

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

2. Three-Stage

This is precisely Front Street Coffee's most commonly used brewing technique—the "three-stage." Different substances in coffee dissolve at noticeably different rates. Simply put, the order in which hot water releases flavors is roughly sour first, then sweet, then bitter. The purpose of staged pouring is to extract the aromatic substances contained in the coffee as fully as possible.

Also taking 15g coffee and 225ml water as an example, the three-stage allocation is 30ml for blooming, 95ml for the first pour, and 100ml for the second pour, with the extraction time being relatively longer.

Apart from the blooming stage, when pouring with the same coffee-to-water ratio, the more stages there are, the more times the coffee bed is washed, and the time naturally lengthens. Coffee extracted with the three-stage method can dissolve flavor substances more fully, with increased layering and higher compatibility.

3. 4-6 Method

The "4-6 method" was invented by Mr. Tetsu Kasuya of Japan, who proposed the idea that "anyone can brew delicious coffee." This method is very simple to operate. It does not require particularly stable water control, nor does it require a deep understanding of brewing—as long as you execute according to the formula, you can brew a good cup of coffee.

Kasuya's understanding of the 4-6 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 sourness and sweetness into balance; the remaining three pours account for 60% of the total, and they determine the strength of the coffee's mouthfeel, that is, body.

The most commonly used coffee amount for the 4-6 method is 20g, with 300ml water, brewed in five stages of 60ml each, with a pouring interval of 45ml (the interval includes the pouring time).

Although Kasuya emphasizes simplicity, many people still have a relatively high failure rate when brewing with the 4-6 method, with the problem mostly being over-extraction. The reason is the longer extraction time; many people do not adjust the grind and directly brew with a conventional grind size, ultimately causing the coffee to be over-extracted.

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

4. Three-Temperature Brewing Method

The three-temperature brewing method, invented by Mr. Wu Zelin, actually belongs to variable-temperature brewing. As the name suggests, it uses water at different temperatures for brewing. Based on 16g coffee, he pours 240ml water in four stages: 40ml, 60ml, 60ml, and 40ml respectively.

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

The concept of variable-temperature extraction is not hard to understand: use higher water temperature to extract the rich flavor substances in the earlier stage, then finish with lower water temperature to avoid the risk of over-extraction caused by continuous high-temperature extraction.

However, this brewing method is somewhat difficult and requires a great deal of brewing testing to find the temperature standard suitable for the current coffee beans. Once a suitable temperature plan is determined, you can ultimately get a cup of coffee with a strong flavor expression.

5. Volcano Pour

The volcano pour technique comes from Japan. Its name comes from the carbon dioxide contained in the coffee beans and the coffee fines floating on the surface forming a relatively large bulge that looks like a great mountain; pouring hot water in the center accelerates the coffee grounds' degassing, resembling a volcanic eruption, hence the name volcano pour.

It is more suitable for brewing dark-roasted coffee beans, because only dark-roasted beans can release a sufficiently large amount of gas to form a mountain shape. Use a wedge-shaped dripper, with 30g coffee; the more coffee, the better the visual effect of the volcano, and the grind should be slightly coarse.

Then brew with 300ml hot water (1:10 coffee-to-water ratio). First bloom with hot water at twice the coffee weight for 30 seconds, then pour repeatedly at the center many times, in small amounts, and gently. There is no strict limit on each pour; when the water level begins to drop, you can proceed to the next pour until the target water amount has been poured.

The volcano pour has two distinctive advantages: first, it is highly visually appealing—while brewing coffee you can also enjoy a visual feast; second, the brewed coffee has a balanced mouthfeel, is high in sweetness, and is not bitter. Friends who like dark-roasted coffee should give it a try.

6. Stirring Method

The rise of the stirring method originated from 2012 World Coffee Brewing Championship champion Matt Perger. He used this technique in the competition to win the championship, and later uploaded a video to an overseas video website, the content of which was him rapidly stirring with a wooden stick during the blooming stage, first up and down, then left and right, then up and down again.

The purpose of stirring is to make the coffee grounds tumble under the stirring force, thereby being evenly moistened by water and ultimately achieving balanced extraction. Taking the blooming stage as an example, if you do not stir after pouring, the water will only slowly penetrate downward, causing the coffee bed at the bottom to have insufficient time for blooming and degassing, 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 because of the turbulence caused by stirring, which can easily cause clogging; second, because there is no unified technique and force, everyone stirs in their own way, and one person's stirring cannot be directly copied to another person's operation—many only look similar, while the actual force and direction are completely different. Therefore, when operating, you must fully understand the stirring force, method, and whether the bean's characteristics can adapt to it before deciding whether to use it.

In the end, all brewing methods actually revolve around adjusting and varying according to the release order of the flavor substances—sour, sweet, and bitter. Once you understand the principles 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 can bring, so you can use it freely. This is also the reason Front Street Coffee has always adopted the three-stage method as its commonly used brewing approach.

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