How Do Pour-Over and Espresso Machines Differ?

Espresso relies on roughly 9 bars of pressure to push a concentrated shot out in a short time, building the base for lattes and Americanos. Pour-over uses no pressure at all: water falls freely through the coffee bed, and the brewer controls the pour, so the same bean can taste very different from the two methods.

Espresso preparation follows clear steps: wipe the portafilter basket dry, weigh the dose precisely within about 0.1 gram, distribute the grounds evenly, tamp level, then extract. Pour-over instead depends on a staged pouring technique and watching the bed, and washed Yirgacheffe is often suggested as an entry bean for learning it.

When ordering at a coffee shop, pour-over coffee and espresso often make it hard to choose. What essential differences actually exist between the two? Is it extraction pressure, operating technique, or the way the final flavor is presented? Front Street Coffee will start from the 9-bar high-pressure extraction of espresso, gradually break down the details of distribution, tamping, and extraction, then turn to the pressure-free free-fall extraction of pour-over coffee, explaining in detail the three-stage pouring technique and the skills for judging when to pour again. The article also recommends Front Street washed Yirgacheffe as an entry-level bean for enthusiasts who are new to pour-over, and includes complete brewing parameters and flavor descriptions to help readers build a clear understanding of regional flavors.

Nowadays, when you walk into most coffee shops, the menu often lists both pour-over coffee and espresso. For friends who do not drink coffee very often, it is indeed easy to get confused about what exactly the difference is between the two. They are both coffee, so what kind of character does each have? Front Street Coffee will now sort out the differences between these two types of coffee.

Espresso

So-called espresso refers to coffee made with an espresso machine. The concentrated liquid that flows directly out of the coffee machine is called Espresso, that is, espresso coffee. Using it as a base and adding different ingredients makes it possible to create all kinds of coffee drinks—for example, adding milk to make a latte, or adding water to make an Americano. These all fall under the category of espresso. The most prominent feature of espresso is that it relies on 9 bars of pressure to extract a cup of extremely high-concentration coffee in a short time.

How is espresso made?

Step one, remove the portafilter basket and wipe it clean. Wipe the basket every time before weighing the coffee powder to ensure the basket is dry and has no residual water stains.

Step two, weigh the coffee powder. Use an electronic scale for precise weighing, with the error controlled within plus or minus 0.1 grams. For example, after today's adjustment, the dose was set at 19 grams.

Step three, distribute the grounds. Use your hand or a distribution tool to spread the powder layer evenly, trying to make the coffee powder in the basket evenly distributed. Uneven distribution will cause differences in the density of the puck: where there is more powder, it is denser, and when water passes through, the extraction resistance is greater; where there is less powder, it is looser, and water easily passes through excessively, causing over-extraction.

Step four, tamp. Use a tamper to press the coffee powder firmly and level it, avoiding a tilted or uneven puck.

Step five, extract. Lock the portafilter in steadily, then start the extraction switch as soon as possible. This is done to prevent the high temperature of the coffee machine from accelerating the volatilization of coffee flavor compounds. At the same time, use an electronic scale to weigh the amount of espresso liquid and record the extraction time. Front Street Coffee's result after today's adjustment is: coffee liquid extraction amount 38 grams, that is, a 1:2 powder-to-liquid ratio, taking 27 seconds.

Step six, clean. Turn off the extraction switch, remove the portafilter after the water stops flowing, then run a section of water to rinse the group head.

Pour-over coffee

Pour-over coffee is also an extraction method, but it belongs to pressure-free free-fall extraction. Throughout the process, the speed at which water passes through the coffee grounds is the key to determining the extraction effect. With the help of filter paper, the coffee grounds and coffee liquid are separated, ultimately producing a clean and delicious cup of black coffee.

The greatest characteristic of pour-over coffee is that it can present the flavor of coffee beans very authentically. Different varieties of coffee beans can all be brewed by pour-over to bring out their own taste. Moreover, compared with espresso machines, pour-over is also quite obviously more convenient to operate. Therefore, many coffee shops prepare multiple kinds of coffee beans for pour-over for customers to choose from, while the beans used for espresso are often fixed by the shop.

Front Street here introduces a relatively common brewing method, called "three-stage pouring." Simply put, it splits the entire pouring process into three parts, including the first stage of blooming. Taking the brewing of Front Street Colombia Huila washed Caturra as an example, the parameters used by Front Street are: 15 grams of coffee powder, powder-to-water ratio 1:15, water temperature 88°C, grind size medium-coarse, with a 75% pass rate through a No. 20 standard sieve.

Brewing process

First do the preparation work well (warm the dripper and server, grind the coffee, prepare water at a suitable temperature), then pour in the coffee powder. Begin the first pouring stage while pressing the timer. In the first stage, pour 30 grams of hot water, circling from the center outward. After absorbing water, the coffee powder slowly expands, puffing up into a rounded "coffee hamburger."

Stop when 30 grams of water has been poured, and wait for a 30-second bloom. When the electronic scale shows the 31st second, begin the second pouring stage. Likewise, circle from the center outward, keeping the water flow stable and vertical. When the water column hits the powder layer, foam appears. This stage of brewing lets the coffee foam release and spread across the entire surface of the powder layer, with the liquid level rising to the base of the short ribs. The pouring amount for this stage is 100 grams.

When the liquid level drops to the 1/2 position, begin the final pouring stage. In this stage, still pour 95 grams from the center outward in an "aroma-seeking" manner. The originally dark brown foam gradually turns into pale yellow coffee foam, and the liquid level also returns to the height it had during the second pouring stage. After all the coffee liquid has flowed into the server, remove the dripper and end extraction.

How do you judge the timing for pouring again?

Three-stage pouring has two timing points for pouring again, namely the second stage and the third stage. The timing for the second stage is easy to grasp; usually, once the bloom reaches 30 seconds, it can be done. The third stage is harder to judge because it does not have a fixed time point. Generally, you wait until the water level drops to 1/2 or 2/3 before pouring again.

When the water level drops to 1/2 or 2/3, the dripper will neither hold too much water nor expose the coffee bed because the level has dropped too low, avoiding uneven extraction between the upper and lower layers of coffee powder.

After the water level drops, the water flow can directly penetrate the accumulated water and stir the lower powder layer. If the water level is too high, the impact force of the water column is insufficient, which will cause the upper layer of the coffee bed to be over-extracted while the lower layer is under-extracted.

So, what coffee beans are suitable for people who have just come into contact with pour-over coffee?

Front Street Ethiopia Washed Yirgacheffe G2 Country: Ethiopia Region: Yirgacheffe Altitude: 1800-2000 meters Variety: local heirloom varieties Processing method: washed processing Flavor: jasmine, berries, lemon, citrus

Yirgacheffe is a small town in Ethiopia, with an altitude between 1700-2100 meters. It is one of the highest coffee-producing regions in the world and also synonymous with Ethiopian specialty coffee. Lake Turkana, Lake Abaya, and Lake Chamo bring abundant moisture here. In the rift valley represented by the Misty Valley, mist lingers all year round, it is like spring in all four seasons, with gentle breezes, cool and humid conditions. Thousands of coffee trees grow vigorously here, nurturing the unique terroir of Front Street Yirgacheffe, where floral and fruity aromas interweave and shift unpredictably. The so-called Yirgacheffe flavor refers to rich citrus-lemon fruit acidity, intense jasmine aroma, and a light, elegant mouthfeel with a tea-like quality, drinking like a refreshing, clean cup of lemon tea.

Front Street takes into account precisely that washed processing can better display the cleanliness of coffee's mouthfeel and the purity of its flavor, so when analyzing the specific flavor of a coffee-producing region, it uses the washed beans of that region as a reference. If every beginner has not yet tried Front Street Yirgacheffe, Front Street will also give priority to recommending this Front Street washed Yirgacheffe. It helps form an understanding of the region's flavor, and later, when trying Yirgacheffe coffees with natural, honey, and other processing methods, there will be a direction for comparison.

Front Street Coffee brewing recommendation Water temperature: 90-91°C Grind size: BG#6m (caster sugar size / 80% passing a No. 20 sieve) Powder-to-water ratio: 1:15 Coffee dose: 15 grams

Front Street brewing method: In the first stage, pour 30 grams of water for a 30-second bloom, then pour 95 grams (the electronic scale shows about 125 grams), finishing the pour in about 1 minute; when the water level drops to 2/3 of the coffee bed, pour the remaining 100 grams (the electronic scale shows about 225 grams), finishing the pour in about 1 minute 40 seconds. Dripping is completed at 1'55''-2'00'', remove the dripper, and extraction is complete.

[Front Street Ethiopia Washed Yirgacheffe] Brewing flavor: jasmine aroma, berry juice-like quality, lemon and citrus acidity, overall bright, clean, and fresh.

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

For more specialty coffee beans, please add the private WeChat of Front Street Coffee, WeChat ID: kaixinguoguo0925

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