What Sets Lightly Roasted Beans Apart in Pour-Over and Espresso?

Pour-over and espresso differ in bean choice, brewing method and caffeine content. Pour-over is usually paired with lightly roasted single-origin beans and extracts gently for a clear, unadorned cup. Espresso uses about nine atmospheres of pressure, producing a concentrated shot that is easier to operate and more widely accepted.

The article also compares two low-temperature methods: ice drip coffee and cold brew coffee, which trade heat for time and yield a softer, sweeter result. Beginners can start with espresso for consistency, while enthusiasts refining their skills can move to pour-over and adjust grind, ratio and water temperature.

What exactly is the difference between pour-over coffee and espresso? This article compares the two across three dimensions: coffee bean selection, brewing methods, and caffeine content, and takes a deep dive into the specific operational processes of espresso and pour-over coffee, including the extraction parameters and equipment setup at Front Street Coffee's store. It also introduces the characteristics and differences of two low-temperature extraction methods: ice drip coffee and cold brew coffee. Whether you are a beginner just getting into coffee or an enthusiast hoping to refine your brewing skills, you will find practical reference information here and experience the flavor changes brought by different extraction methods.

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Coffee is growing increasingly popular in China, showing signs of overtaking fast-moving consumer drinks such as milk tea, though different consumer groups naturally have their own preferences. When it comes to coffee, pour-over and espresso are two topics that cannot be avoided. Pour-over coffee is most often paired with single-origin beans; it presents a kind of unadorned, pure beauty—not rough, not concealing, not perfunctory—and can be called another excellent expression of coffee. In terms of overall experience, pour-over is ultimately gentler—though of course, this is relative to espresso.

Sitting alone in the afternoon, a cup of coffee, a book, a soft chair—such a simple combination can piece together a modest happiness. The beauty of pour-over single-origin coffee lies in the fact that you can personally witness the entire process from pouring water and extraction to the coffee dripping down drop by drop—that is coffee in its most authentic form. By contrast, espresso relies on nine atmospheres of pressure to complete extraction, which is the second reason I call it gentle. In fact, espresso can also deliver a heart-racing experience—it's just that you may not have tasted it yet. The third advantage of single-origin coffee is that it more easily allows people who originally don't drink coffee to accept coffee and enjoy its original flavors. Admittedly, espresso is more "foolproof" in operation and more easily accepted by the general public, but perhaps it is precisely the maverick beauty of pour-over that has attracted so many followers.

Let's now look at exactly what differences exist between pour-over coffee and espresso.

1. Different coffee beans

Pour-over coffee Single-origin coffee beans are usually used as the brewing material, with light and medium roasts being the main choices, though some people prefer to use dark-roasted beans for pour-over.

Espresso Espresso generally blends multiple single-origin beans together—what is known as a blended coffee bean—and is widely used to make cappuccino, Americano, latte, and other espresso drinks. Blended beans are mostly roasted on the darker side so as to pair well with milk and hot water. Making this kind of coffee requires a professional espresso grinder, which is also the foundation and key to producing a high-quality espresso.

2. Different brewing methods Pour-over coffee Pour-over coffee is mostly made with the help of a dripper, that is, extraction is carried out under normal atmospheric pressure. If you use a moka pot or AeroPress and similar devices, the pressure during extraction can also reach 3 bar (three atmospheres).

Espresso Espresso is extracted through an espresso machine; the pressure provided by the machine brings the extraction environment to 9 bar (9 atmospheres). The puck in the portafilter basket bears about 133 kilograms of pressure, forcing the coffee to release a large amount of substances, including some flavor components that are difficult to dissolve under normal pressure. As a result, espresso has a thicker mouthfeel and is suitable for adding milk to make a latte, or diluting with water to make an Americano.

3. Different caffeine content Assuming the same dose and grind size, since caffeine is a water-soluble substance, the longer the brewing time, the more caffeine is released. Pour-over coffee typically brews for 1 to 3 minutes, while espresso typically brews for 20 to 30 seconds. Therefore, under the same dose and grind size, pour-over coffee actually has a higher caffeine content. From this we can infer that long-extraction coffees such as ice drip coffee and cold brew coffee will have a caffeine content many times higher than other coffees.

You can observe that there is a huge difference in concentration between the coffee liquid brewed by pour-over and by Espresso. Once milk is added to single-origin coffee, the coffee's own aroma and flavor are masked by the milk, so ordinary coffee shops generally do not recommend adding milk to pour-over coffee.

How to make espresso

Many coffee enthusiasts have unknowingly accumulated a lot of coffee equipment at home, and those obsessed with espresso have even stocked up on espresso machines, ready to extract it themselves. Here, Front Street takes the espresso produced in its store as a reference to briefly explain how to make an Espresso.

The coffee machine used in Front Street's store is a commercial single-group "Lelit Bianca," which can adjust extraction by changing pressure, with a maximum pressure of up to 11 bar. A home coffee machine only needs to reach 9 bar of pressure to meet the needs of extraction and milk frothing, and pairing it with an espresso grinder is enough.

Front Street uses the capacity of a double basket, with a dose of about 18 to 20 grams; Front Street uses 20 grams of coffee grounds when producing. The ratio of coffee grounds to coffee liquid is usually controlled between 1:1.5 and 1:2.5. Front Street adopts an extraction ratio of 1:2, that is, 20 grams of coffee grounds extract 40 grams of coffee liquid. The extraction time is related to the flow rate of the coffee grounds; generally a single extraction is controlled at 20 to 35 seconds, because within 20 seconds the coffee taste is usually thin, while exceeding 35 seconds it is prone to over-extraction and a burnt-bitter taste. Front Street's espresso mostly falls within the range of 28 to 30 seconds.

Front Street first wipes the portafilter basket dry, turns on the grinder, grinds out the amount for a double shot, and places it on an electronic scale to add or remove until it reaches 20 grams. Next, use a tool to distribute the grounds evenly, and tamp the coffee puck firmly to ensure more stable extraction. Then turn on the extraction switch to release water, moistening the brew head while carrying away the coffee grounds stuck to it. Gently and slowly lock the portafilter onto the brew head, and begin pulling down the brew lever to extract. When the electronic scale shows that 40 grams of coffee liquid has been extracted and the time is about 30 seconds, you can pull down the extraction switch. Pour the coffee liquid into an Espresso cup and it is ready to enjoy.

The taste and mouthfeel of Espresso are closely related to the coffee beans used. The espresso produced in Front Street's store uses Front Street's Sunflower Warm Sun blend, composed of Honduras Sherry coffee and Ethiopia natural Red Cherry in a 7:3 ratio. After being made into Espresso, it has a rich crema, a very prominent whisky aroma, and on the palate presents the acidity of vanilla cookies and berries; the flavor is solid, and after drinking, the entire mouth is filled with various aromas.

Espresso can also be diluted with water, which is the commonly seen Americano on menus, full of a fresh fragrance; adding milk turns it into a latte, presenting the sweet deliciousness of chocolate and cream.

How to make pour-over coffee

To make pour-over coffee at home, you need the following equipment: a gooseneck kettle, a dripper, a server, a grinder, filter paper, an electronic scale, and a thermometer. Here we take Yirgacheffe as an example; it is a medium-light roasted high-altitude coffee bean. Front Street hopes to extract more rich aromatic substances, so it chooses a grind size with 80% passing through a standard No. 20 sieve, corresponding to a setting of 10 on the EK43s grinder used in the store. In addition, lightly roasted coffee needs a higher water temperature to bring out the aroma, so 91 to 93°C is used, and a resin V60 01 dripper is used for extraction.

On online media you can see various pour-over pouring techniques, such as the one-pour method, three-stage method, four-six method, and so on. Different techniques can create differences in the flavor expression of the coffee in the cup. Based on past brewing experience, Front Street recommends that beginners just starting out use the three-stage pouring method. Three-stage extraction helps more fully dissolve flavor substances during extraction, increases the layering of the mouthfeel, and at the same time avoids over-extraction caused by too long a steeping time.

If using 15 grams of coffee grounds, with a coffee-to-water ratio of 1:15, the total water amount is 225 ml. The three-stage water amounts are: 30 ml, 95 ml, and 100 ml, and the weights shown on the electronic scale are: 30 g, 125 g, and 225 g.

Fold the filter paper and fit it to the dripper, use a small amount of water to wet the filter paper while making it sit more snugly, and discard the water in the server. Then pour in the coffee grounds and tap lightly so the grounds are evenly distributed. For the first stage, gently pour in 30 grams of water for blooming, with a blooming time of 30 seconds; for the second stage, pour in water up to about 125 grams, circling outward evenly and steadily. Then wait for the coffee liquid to drop; when it has dropped by half, pour in the final stage of water up to 225 grams. After the coffee has fully dripped through, the total extraction time is generally about 2 minutes.

The reason people love pour-over coffee so much is that when we actively explore the flavor expression of coffee extraction, we can adjust the brewing method according to different coffee varieties and roast levels, carefully select brewing vessels to experience the different faces of coffee brought by different extraction methods, and regulate grind size, temperature, flow rate, pouring technique, and many other factors to adjust the extraction effect. Every step can bring a different taste and aroma experience—this is exactly where the charm of pour-over coffee lies.

In addition, there is another coffee extraction method that is especially popular, namely ice drip coffee. Ice drip coffee uses an ice-water mixture below 5°C, allowing the ice to melt naturally, with a valve controlling the speed at which ice water drips into the coffee grounds. The ice water slowly dissolves the flavors in the coffee grounds, dripping out the extraction liquid little by little, with a complete extraction time of about 6 to 8 hours. To obtain a better taste, it then needs 8 to 12 hours of refrigerated fermentation time.

Cold brew coffee The principle is the same as cold-brewed tea. The extraction process is to first grind the coffee beans, add cold water, and soak in a low-temperature environment for at least about 12 hours. Before drinking, simply filter out the coffee grounds. Because it is an immersion extraction, there is no need for refrigerated fermentation after filtering is complete.

Of the coffees obtained by the two low-temperature extraction methods, ice drip coffee has a richer flavor and a more delicate overall layering, while cold brew coffee has a fuller mouthfeel. Each of the two coffees has its own charm. Therefore, if you don't want too much trouble at home, you can try cold brew coffee; if conditions allow, you might as well buy an ice drip pot to make ice drip coffee.

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