Pour-over drip coffee seems simple—just a dripper, a hand pouring kettle, a filter paper, and a cup are all you need—but once you actually start, you realize there are numerous variables. This article begins with basic equipment and gradually introduces the standard brewing process, the interrupted-pour technique, advanced gear, and the five major variables, with specific water temperature and grind recommendations for light, medium, and dark roasts. Whether you are a beginner just getting into pour-over or an enthusiast looking to refine your technique, you will find practical parameter references here. The article also covers methods for adjusting variables based on taste, cleaning and maintenance tips, and practical solutions for making flavored coffee bases and super-concentrated iced coffee, along with recommendations for related Front Street Coffee products.

Pour-Over Drip Coffee Brewing Method (Illustrated)

The principle and required equipment for pour-over coffee are quite simple. As long as you have a dripper, a hand pouring kettle, a filter paper, and a cup, you can make a decent cup of coffee. Even when playing around with the water-pouring filtration method, you only need to specially prepare a sheet of filter paper to brew a cup of coffee.

Although pour-over looks easy and the brewing process is not as dramatic as with a siphon or moka pot, the first time you pick up the equipment to brew coffee, you will run into plenty of problems. When choosing equipment, for the filter you have options like various drippers, metal mesh filters, and flannel; for the pouring kettle, you can use anything from a flower tea pot at home, a glass pot, to a standard-mouth pour-over kettle, or even various narrow-spout kettles. Equipment and brewing methods are endlessly varied, with many schools of thought, each with its own considerations and advantages. Below, we introduce things step by step, from simple to complex equipment, and from simple to complex techniques.

1 [Brief Component Overview]

"Pouring Kettle–Tea Pot": Any pot with a spout at home can be used.

"Dripper": Here we introduce the most commonly used three-hole 2–4 serving dripper.

"Filter Paper": Purchase filter paper of the same size according to the dripper size.

"Server–Small Cute Pot": A common glass pot on the market, with a capacity of about 400 c.c.

"Cup": Used to catch the coffee at the bottom.

2. Usage Method_1:

First fill the coffee cup with water (cold or hot), pour it into the glass pot to measure out the amount needed for one cup of coffee, and remember to mark it.

Usage Method_2:

Place the dripper on the small cute pot. Pour boiling hot water into the pouring kettle and let it sit to slowly cool down. If you have a thermometer, insert it into the kettle to measure the temperature; by the time you start brewing, it should be around 85–90°C.

Usage Method_3:

Place the ground coffee into the upper chamber and lock it onto the lower chamber, then place the lower chamber on low heat (at this point the pot looks inverted).

Usage Method_4:

Pour hot water over it so the filter paper lies flat against the dripper, while also warming the dripper and glass pot, then pour the water out.

Usage Method_5:

Pour the coffee grounds (about 1–1.5 scoops per cup) into the dripper, pick up the dripper and tap the side with your hand so the surface of the coffee grounds is roughly level.

Usage Method_6:

Using the pouring kettle, start pouring from the center of the dripper, then work outward to wet the coffee grounds. After completing steps 4–6, the water temperature in the pouring kettle should be around 85–90°C.

Usage Method_7:

After wetting the coffee grounds, let it sit for about 20–30 seconds; this is the interrupted-pour method or blooming. The water column from a flower tea pot is relatively large, so here we introduce using the interrupted-pour method to maintain coffee concentration.

Usage Method_8:

Using the pouring kettle, pour water from the center of the dripper out to near the edge of the dripper (do not pour onto the coffee grounds at the very edge), then pour back. Repeat this until the coffee in the lower small cute pot reaches one cup's worth.

Usage Method_9:

After one cup's worth of coffee has flowed into the lower small cute pot, directly move the dripper onto the cup to catch the bottom. You can also just place the dripper directly in the sink.

[Advanced Equipment]

1. "Thermometer": Allows more precise control of temperature changes. Usage: Place the measurement point in the middle of the water; do not let the thermometer directly touch the bottom.

2. "Narrow-Spout Kettle": There are many common types of narrow-spout kettles. A narrow-spout kettle can effectively control the size and stability of the water column. The biggest differences among different shapes of narrow-spout kettles are whether the water column remains good as the water level drops, whether operation is strenuous, and whether the feel is smooth when pouring in circles. When purchasing, it is recommended to hold it and feel the grip, try pouring, and if the shop is willing to let you fill it with water to test the flow, that would of course be even better (such situations are probably rare). Based on the author's experience, narrow-spout kettles shaped like the Mila stainless steel kettle and the Kalita 900 just kettle both have a better feel.

3. "Coffee Grinder": Grinding coffee beans yourself not only helps with freshness, but the grind particle size is also an important variable.

[Advanced Player] (Using medium roast to brew 150 c.c. with the non-interrupted pour method as an example)

Usage Method:

1. First fill the coffee cup with water (cold or hot), pour it into the glass pot to measure out the amount needed for one cup of coffee, and remember to mark it.

2. Place the dripper on the small cute pot.

3. Pour boiling hot water into the pouring kettle and insert the thermometer.

4. Fold the filter paper so it fits snugly against the dripper.

5. Pour hot water over it so the filter paper lies flat against the dripper, and warm the dripper and glass pot, then pour the water out.

6. Pour 1.5 scoops of coffee grounds into the dripper, pick up the dripper and tap the side with your hand so the surface of the coffee grounds is roughly level.

7. Check the thermometer, then using the pouring kettle, start pouring from the center of the dripper, pouring from the center out to the edge and back to the center as one circle. The water column goes from small to large; it is recommended to complete one cup's worth using four circles: small–small–medium–large, pouring until one cup is reached.

"First Circle–Small Water Column": Evenly wet the coffee grounds.

"Second Circle–Small Water Column": Let the grounds develop upward.

"Third Circle–Medium Water Column": At this point the coffee flows out faster, so increase to a medium water column to keep the grounds developing upward.

"Fourth Circle–Large Water Column": Increase the water column further and pour until one cup of coffee is reached. At this point the foam turns white, and most substances have been extracted.

"Interrupted-Pour Method"

Using the interrupted-pour method to extend the steeping time can increase coffee concentration and add body to the coffee's flavor—it is a very useful technique. The method for a single interrupted pour is as follows:

The mnemonic is: small small small medium large

1. In the first circle, just wet the coffee grounds and then stop (do not let too much coffee drip down).

2. Observe the foam development. If the foam is collapsing or the surface is drying out, wait about 1 minute, then pour in the small-small-medium-large pattern until the desired amount is reached.

(After the interrupted pour, wait until the grounds stop developing and the surface is relatively dry, then begin the small-small-medium-large pour until one cup is reached.)

[The Five Major Variables]

"Temperature"

Extraction efficiency: Like other brewing equipment, temperature affects coffee extraction efficiency. Bitterness and astringency are among the later-extracted flavors. If the brewed coffee is too bitter or burnt, try lowering the temperature. Conversely, if it feels like many flavors are still left in the coffee grounds, consider increasing the temperature.

Grounds development: When the beans are fresh, another notable aspect of pour-over is the development of the grounds. In terms of temperature, the higher the temperature, the faster the coffee grounds expand upward after water is poured onto them. For light-roasted beans or when the grind is finer and the grounds do not easily expand, you can consider increasing the water temperature to help the grounds develop.

"Grind Size"

Extraction efficiency: Similarly, in pour-over, grind size also affects extraction rate—finer grind means higher extraction rate, coarser grind means lower extraction rate. Pour-over involves continuously adding water and continuously filtering, unlike siphon which steeps. Therefore, grind size is much more important for flow rate and grounds development.

Grounds development: Usually, for fresh coffee beans, grinding to a size near Taiwan Sugar No. 2 granulated sugar gives better grounds expansion (of course, this also changes somewhat depending on the roast level). Next, the coarser the grind, because water passes through quickly, the grounds develop slowly; the finer the grind, because water does not pass easily and gets stuck on the grounds, they also develop slowly. So for coarse grinds, the water column and pouring speed can be slowed to adjust the flow rate; conversely, for fine grinds, you can dig a hole in the grounds before pouring to improve water penetration.

"Coffee-to-Water Ratio"

Concentration: Generally speaking, to increase coffee concentration, increasing the amount of coffee grounds is of course one method, but pay attention to the penetration situation after water is poured. When the amount of grounds increases, the layer of grounds in the dripper also thickens; it is recommended to use a bit more water in the middle to ensure the coffee grounds in the center receive enough water.

Serving size: It is generally recommended to use 15 g for a three-hole dripper to brew 150 c.c. of coffee. So does that mean to brew 300 c.c. you need 30 g, and for 450 c.c. you need 45 g? The answer is no. The concentration of pour-over is related to flow rate and the time water stays in the coffee grounds. Because the more cups you brew, the more grounds there are and the thicker the layer, the longer water stays in the grounds, and the better the extraction efficiency. Conversely, the more grounds there are, the same pouring water column flow rate will result in a slower flow rate. So when brewing more cups, you can reduce the amount of grounds and increase the water column.

"Roast Level"

Light roast: Light-roasted beans usually do not expand and bubble very well after contact with hot water, and light-roasted beans have a denser texture and tend to sink during brewing, making the surface thin. Similarly, this affects the flow rate, so it is generally recommended to use a high temperature above 90°C for light-roasted beans and a smaller water column, which makes it easier to extract the flavor.

Dark roast: Dark-roasted beans have a much looser texture, absorb water well, the grounds expand easily when watered, and the coffee grounds tend to float on the surface; however, the burnt bitter taste is also relatively stronger. The advantage of dark-roasted beans lies in their body and good coffee oils, which can be expressed at 88–90°C.

Therefore, the recommendations for roast level and temperature are as follows:

Light roast: Temperature about 90–93°C; after the water comes to a boil, pour it into the copper kettle and it is ready for brewing.

Medium roast to medium-dark: Temperature about 80–85°C.

Dark roast: Temperature about 88–90°C.

"Freshness"

In addition to changes in the coffee's own flavor, for pour-over, freshness makes an obvious difference in how the coffee grounds expand and bubble when hit with hot water. The fresher the roasted beans, the better the bubbling; beans that have been left at room temperature for more than two weeks after roasting do not bubble as well. When bubbling is poor, you can consider using a smaller water column to increase the time water stays in the grounds, which helps extract the flavor. However, it is still not recommended to drink stale beans.

[Adjusting Variables by Taste]

"Adjust by taste / without changing coffee grind size": Adjust water temperature.

1. If the coffee tastes burnt, astringent, or clearly bitter and the taste lingers for a long time, it means the water temperature is too high.

2. If the coffee tastes very astringent, with a strong grassy smell, as if the coffee is not cooked through (not fully extracted), it means the water temperature is too low.

"Adjust by taste / without changing water temperature": Adjust grind size.

1. If the coffee tastes burnt, astringent, or clearly bitter, it means the grind is too fine.

2. If the coffee tastes like nothing much, all very weak, it means the grind is too coarse.

"Adjust by taste / roast level": Adjust water temperature.

1. If the coffee beans look oily and shiny on the surface and the coffee tastes burnt, you can raise the water temperature a bit.

2. If the coffee beans look cinnamon-colored (or slightly darker) and the coffee tastes very astringent, with a strong grassy smell, as if the coffee is not cooked through (not fully extracted), you can raise the water temperature a bit; otherwise, lower the temperature.

[Cleaning and Maintenance]

Pouring kettle: Pour out all the water in the pouring kettle, wipe the inside clean with a clean cloth (or paper towel), and keep the inside dry. Dripper and glass pot: Wash clean with water and let air dry naturally.

"Newly Purchased":

Pouring kettle: Rinse with hot water.

Dripper and glass pot: Wash clean with water and let air dry naturally.

[Base]

"For Flavored Coffee":

Use dark-roasted beans with the interrupted-pour method. Because the base needs high concentration and not much is needed, you can use 15 g of coffee grounds to brew 50 c.c. (If making iced coffee, use a shaker to chill and concentrate it so the strength is sufficient.)

"Super-Concentrated Iced Coffee":

Use dark-roasted beans with the interrupted-pour method. Because the base needs high concentration and not much is needed, you can use 15 g of coffee grounds to brew 100 c.c. (If making iced coffee, use a shaker to chill and concentrate it so the strength is sufficient.)

Front Street Coffee recommendation: For pour-over beginners, you can choose beans such as Front Street washed Yirgacheffe and Front Street Colombia Huila; the flavors are clear, the value for money is high, and they are suitable for practicing brewing parameter adjustments. Front Street Coffee's daily ration bean series is also an affordable choice for everyday pour-over.

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