How Do You Set a Pour-Over Coffee Ratio for One Serving?

For one serving, a practical pour-over baseline is 15 grams of coffee to 225 grams of water, a 1:15 ratio that sits inside the 1:12 to 1:15 range suggested by SCA Golden Cup standards. That starting point gives a balanced extraction, provided grind size, water temperature, and total time are kept consistent from brew to brew.

The method breaks down into four points: water temperature, grind setting, blooming, and pouring stages. Blooming with a small amount of water first, then pouring the remainder in stages, keeps extraction even. Stirring the bloom, the Japanese drip method, one-cut pouring, and volcano pouring are variations that suit different beans and taste preferences.

The coffee-to-water ratio in pour-over coffee directly determines the strength and flavor direction of a cup. Front Street Coffee has found in daily conversations with customers that many people are unclear about how much coffee to use and how much water to pour for a single serving. Starting from the SCA Golden Cup extraction yield, this article explains why the reasonable range for coffee grounds and water volume falls between 1:12 and 1:15, and combines practical brewing experience to use the single-serving parameters of 15 grams of coffee and 225 grams of water as an example, fully breaking down the key operating points of water temperature, grind size, blooming, and three-stage pouring, while also introducing the applicable scenarios of stirring bloom, Japanese drip method, one-cut method, volcano rush, and other techniques, helping enthusiasts establish a reproducible brewing baseline.

Front Street Coffee is asked by customers almost every day about various questions regarding pour-over coffee, such as how to perform the pouring technique, or how much coffee grounds should be used.

With the continuous spread of coffee culture, coffee is no longer some distant beverage; it is right around us, and you can even make a cup yourself at home. However, many people still believe that brewing a good cup of coffee is not easy. Front Street believes the key is to establish your own understanding of pour-over coffee, then verify it through repeated practice. Perhaps by this point, many people still feel a bit unclear. Today Front Street Coffee will talk about how to brew a good cup of pour-over, and although there are many factors affecting taste, the coffee-to-water ratio is one that cannot be ignored.

In brewing philosophy, Front Street Coffee favors a stable pouring method, that is, under the premise that grind, water temperature, weight, and time are all accurate, allowing the coffee to be fully extracted, thereby ensuring stable flavor presentation. The accurate parameters mentioned by Front Street Coffee are based on the standards given by the SCA, combined with the results of its own practical operating experience. Over-extraction means exceeding the Golden Cup requirement, while under-extraction means falling below the Golden Cup requirement. With this brewing method, Front Street Coffee is providing everyone with a standard reference, and you can make adjustments based on personal preference on top of it.

What is the Golden Cup extraction yield?

About 30% of the substances in coffee beans are soluble, but it is not best to extract all 30%. The Golden Cup extraction yield range defined by the SCAA, the Specialty Coffee Association of America, is 18% to 22%, meaning that from 10 grams of coffee grounds, 1.8 to 2.2 grams of substances are extracted, while the TDS concentration of drip coffee is roughly between 1.2% and 1.45% (as shown in the index below), that is, the extracted 18% to 22% of coffee substances account for 1.2% to 1.45% of the entire cup. So most of what we drink in pour-over coffee is actually water. Front Street Coffee suggests everyone use a calculator to work it out: in order to fall within this concentration range, the ratio of coffee grounds to poured water is roughly between 1:12 and 1:15.

Front Street Coffee regulates brewing parameters precisely according to this range. Before any new beans are put on the shelf, they go through repeated adjustments in roasting, cupping, pour-over, and other stages, among which the adjustment basis for the pour-over part is the TDS concentration. Of course, if it is only for daily drinking at home, there is no need to specially buy instruments; you can judge strength by taste. After many brewing tests and customer feedback, Front Street Coffee recommends controlling the coffee-to-water ratio at around 1:15.

It should be noted that 1.2% to 1.45% is only a statistical range suitable for most people's tastes. If it is below or above this range, as long as it suits your own preference, it is equally acceptable.

Single-serving amount for pour-over coffee

Whether making a single serving or multiple servings, the Golden Cup extraction yield range should be followed. Front Street Coffee uses a 1:15 coffee-to-water ratio, with the coffee dose set at 15 grams, ultimately yielding 225 grams of coffee liquid, which is just right for one serving. For two servings, in addition to switching to a larger dripper, the coffee dose is increased by 10 grams. Stacked up layer by layer this way, the coffee bed becomes thicker, the water flow speed slows accordingly, and over-extraction easily occurs, so Front Street Coffee recommends starting practice with a single-serving pour-over first.

Below, Front Street Coffee uses a Front Street Colombia Flower Moon coffee currently sold in stores as an example for a brewing demonstration.

Front Street Colombia Flower Moon coffee beans

Region: Colombia, Huila region

Farm: Astorga Farm

Altitude: 1800m

Variety: Caturra

Processing method: Anaerobic natural

Roast level: Light roast

The pour-over coffee brewing parameters used by Front Street Coffee:

Dripper: Hario V60

Water temperature: 90℃

Coffee dose: 15g (single serving)

Coffee-to-water ratio: 1:15

Grind size: fine granulated sugar size (80% passing rate on China standard No. 20 sieve).

Front Street Coffee chooses a water temperature of 90℃. The higher the temperature, the more active the movement of substance molecules, but after reaching a certain temperature value it tends to balance out. The more active the molecular movement, the higher the extraction yield. As mentioned earlier, what we pursue is not the highest value, but the most suitable value, both allowing enough flavor substances to dissolve out and ensuring it is comfortable to drink, not too hot for the mouth. Usually the water temperature is between 83℃ and 94℃; Japan prefers lower water temperatures because they are accustomed to immersion extraction, which is not suitable for high temperatures. After many tests and customer drinking feedback, Front Street Coffee believes that brewing light-roasted coffee beans at 90℃ is more suitable.

Grind size

Grind size refers to the coarseness or fineness of coffee particles, and it affects the contact time between coffee and water. The finer the coffee grounds, the more substances water can extract in the same amount of time, but it is also more prone to over-extraction; conversely, the coarser the grind, the fewer substances are extracted in the same amount of time, but under-extraction easily occurs. Front Street Coffee recommends using an 80% passing rate on China standard No. 20 sieve as the pour-over grind size, which is a conclusion drawn after many taste tests. It should be noted that different coffee beans are suited to different grind sizes, so when the pour-over flavor is off, you can check whether there is a problem with the grind size.

The finer the coffee is ground, the larger the surface area, meaning the faster the extraction speed. Front Street Coffee suggests that if you usually brew dark-roasted beans and now switch to light roast, you can adjust the grind finer. By the same principle, if you usually focus on light roast and switch to dark roast, you should grind slightly coarser.

Front Street Coffee uses an EK43s. However, a small reminder: even grinders of the same brand can differ in grinding performance from one another. Front Street Coffee re-sieves the grounds at intervals to confirm whether the grind size needs adjustment.

Pour-over coffee pouring technique

Front Street Coffee uses staged extraction, that is, three-stage pour-over.

First pour: bloom (to help degassing)

During the roasting process in which coffee beans change from green beans to roasted beans, a series of chemical reactions and physical changes occur. When roasting reaches a certain degree, a large amount of gas accumulates inside the coffee beans, most of which is carbon dioxide.

Generally speaking, the fresher the coffee beans and the closer they are to the roast date, the more bubbles appear during blooming. Dark-roasted beans also release more gas during blooming than light-roasted beans. Front Street Coffee's coffee beans are all freshly roasted, so customers are generally advised to rest the beans for three days first to let carbon dioxide release preferentially, thus avoiding instability and under-extraction during brewing.

Only after the gas is released during blooming can the coffee particles absorb water evenly, making subsequent extraction more uniform. A good bloom allows the coffee grounds to degas quickly, fully, and evenly, while also allowing the coffee grounds to fully and quickly come into contact with water, helping the coffee grounds be evenly extracted.

During the bloom of pour-over coffee, pay attention to the following four points:

1. Before pouring for the bloom, first level the coffee grounds.

2. During the bloom, pour gently.

3. During the bloom, as little extracted liquid as possible should drip down; when too much extracted liquid appears in the server, reduce the amount of water poured or pay attention to the grind size. (If too much water is used for the bloom, a large amount of coffee liquid drips down, and the falling water does not stay but directly carries out substances from the outside of the coffee grounds; the off-flavors and astringency in the outer layer of the coffee grounds also begin to dissolve out, making the brewed coffee both weak and carrying off-flavors from over-extraction. If too little water is used for the bloom and no water drips at all, it means the coffee grounds have not absorbed enough water, and some coffee has not degassed sufficiently, causing under-extraction.) In response to this situation, after many bloom tests, Front Street Coffee found that pouring water at twice the weight of the coffee grounds is more suitable.

4. The bloom time is about 30 seconds. When the expansion on the surface of the coffee grounds ends, you will see shrinkage appear on the coffee surface; this indicates the bloom is complete and you can begin pouring. (If the bloom time is too long, the coffee easily develops bitterness and astringency; if too short, the soak is insufficient, and the coffee may be under-extracted, or the flavor may not fully emerge.) Generally speaking, the bloom end time differs for each bean, but Front Street Coffee found that this is not conducive to beginners' operation. After all, beginners value standardization and ease of use, so on the premise that the coffee beans are freshly roasted, Front Street Coffee recommends a bloom time of 30 seconds; experienced brewers can adjust it themselves.

Second pour for pour-over coffee

The second pour starts from the center, pouring into the bottom of the coffee bed with a small stream. To make the penetrating force of the stream more concentrated, the circling range should be small, about the size of a one-yuan coin, and then circle outward. From the start of the second pour, pay attention to the water volume, trying not to exceed the height of the coffee bed; that is, when the stream circles to near the filter paper, you can stop pouring.

Third pour for pour-over coffee

The originally thicker coffee bed near the edge of the filter paper becomes heavier after absorbing water and slides down and thins as the water level drops. When the water level drops to halfway, you can proceed with the third pour.

From the start of the third pour, observe the extent to which the water level drops. Likewise, start circling from the center, and do not let the water volume exceed the height of the coffee bed. At this time you will also observe that foam has covered the entire surface. The third pour should increase the tumbling of the coffee particles, making all the settled particles tumble, thereby dissolving soluble substances.

The rolling particles will begin to settle once pouring stops. At this point, it depends on the flow speed caused by the dropping water level to create friction among the coffee particles. So once pouring stops, the coffee particles will sink downward, causing clogging, so pay special attention to the rhythm of pouring. If pouring is interrupted too many times, it is equivalent to letting the coffee particles stay soaked in water, which will cause astringency and off-flavors in the final stage of extraction.

Summary:

For this Front Street Colombia Flower Moon coffee bean brewed by Front Street Coffee, the overall process is: use water at twice the weight of the coffee grounds for the bloom, that is, 30 grams of water, with a bloom time of 30 seconds. Pour in a small stream in circles until 125 grams, then pause; when the water level drops and is about to expose the coffee bed, continue pouring until 225 grams and stop; when the water level drops and is about to expose the coffee bed, remove the dripper, (timing starts from the beginning of the bloom) with an extraction time of 2 minutes.

Flavor of Front Street Colombia Flower Moon coffee

Rich strawberry aroma, strawberry acidity on the palate, jam-like sweetness in the middle, a slight cocoa finish, and a juicy mouthfeel.

Of course, besides the three-stage brewing technique, there are also the one-cut method, drip method, volcano rush, stirring method, and so on. Front Street Coffee recommends that beginners use the three-stage pouring method to brew because this technique is suitable for light-roasted, medium-light, and medium-roasted coffee beans. The staged extraction method of three-stage pouring can clearly define the front, middle, and back-end flavors of the coffee, and can relatively ensure the presentation of the coffee's flavor. Below, Front Street Coffee briefly introduces several other brewing techniques and their advantages and disadvantages.

Stirring bloom method

Suitable for light-roasted coffee beans

Stirring method: during the bloom stage, use a stirring stick to stir in a cross pattern. It is also a branch of the three-stage method, a pour-over technique that developed only after Matt Perger, the 2012 World Brewers Cup champion. This approach can effectively enhance the release of aromatic substances in coffee beans, amplify the flavor strengths of the coffee beans, and strengthen the coffee's mouthfeel so it is not too thin.

The stirring method has very high requirements for coffee bean quality. If poorer coffee beans are used, it will amplify their undesirable flavors. In addition, the stirring bloom method is more suitable for brewing light-roasted coffee beans, and in terms of grind size, a relatively fine grind is often adopted, which can increase the water-contact area of the coffee grounds and improve the extraction yield. But if the degree of stirring is not controlled well, over-extraction is also easy.

So we also recommend pairing it with pour-over equipment known for rapid extraction. The Hario v60 dripper uses alternating long and short spiral extraction ribs, increasing the flow speed; the cloud-like design of the Hario Buono pouring kettle, with its wide base, can provide stronger penetrating force for the poured stream, allowing fine particles to remain tumbling for a longer time. This is important because while the coffee grounds are tumbling, the release of their internal substances is paused, thus avoiding the extraction of off-flavors caused by long soaking.

Japanese drip pouring method

Suitable for medium-roasted or darker-roasted coffee beans

The drip pouring method is also called essence-style extraction: the drip-style pour has a weak stream, disturbs the coffee bed as little as possible, reduces convection, and increases soaking time. Coffee made with this Japanese technique has high body, high sweetness, is rich and smooth, and has a distinct texture.

Because the pour-over kettle needs to pour water drop by drop, it is suitable to choose a flat-cut wide spout or a wide-mouth gooseneck kettle. The advantage of this type of pouring kettle is that the thickness of the stream is highly controllable, making it better suited to the drip pouring method. Paired with Kono's conical dripper, its ribs stop before reaching half the height of the dripper. This design allows the filter paper to fully adhere to the cup wall after absorbing water, greatly limiting the degassing space. This method is more suitable for Front Street PWN Golden Mandheling, Front Street Jamaica Blue Mountain No. 1, and other medium-roasted or darker-roasted coffee beans.

At the start of pouring, we use drop-by-drop pouring, which increases soaking time and, under a low coffee-to-water ratio, allows the coffee grounds to fully expand without producing any off-flavors. Afterward, pour with a fine stream and then a thicker stream to extract the floral and fruity notes of the coffee's front end. The whole process takes about 4 to 5 minutes.

One-cut pour-over technique

Its meaning is that after the bloom, only one uninterrupted pour is made, hence the name.

After the bloom, one uninterrupted pour allows the coffee grounds to remain continuously soaked in water, and the retained liquid fully releases the aromatic substances in the coffee grounds. The flow speed continuously increases, and before the water volume overflows the dripper, reduce the stream. This technique mainly controls the water volume and flow speed; you need to know when to pour in order to achieve the full stage without losing balance. An unsuitable pouring method will disrupt the overall balance of the coffee.

This approach mainly maintains a mild flavor and a sense of balance. The downside is that, because the pouring technique is not well controlled, water may pass through the edge filter paper above the layer without coffee grounds and drip down, so the resulting coffee may be mixed with a watery taste.

Volcano rush brewing technique

The "volcano rush" technique originates from Japan and is suitable for dark-roasted coffee beans, because these beans contain more carbon dioxide. By using the carbon dioxide in the coffee beans and going through multiple blooms, the coffee grounds puff up like a volcanic eruption. "Volcano rush" mostly uses flannel filter cloth and a V60 dripper for brewing. Because the coffee bed is thicker in the middle, water is poured in the center of the coffee grounds at a spot about the size of a one-yuan coin. The first half focuses on fully extracting without disturbing the coffee bed, while the second half pours evenly to prevent over-extraction of the coffee grounds in the middle and to play a diluting role.

Advantages: The coffee has a rich mouthfeel and obvious sweet aftertaste.

Disadvantages: The first half is over-extracted and the second half is under-extracted, making the coffee liquid uneven. It must be fully shaken after brewing to mix into a perfect cup of coffee. But shaking lowers the coffee temperature; if high-temperature extraction is used to maintain temperature, the coffee becomes dry and astringent.

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