Coffee Pot American vs Espresso: How Extraction Differs

Pour-over and espresso split the coffee world into two paths. Pour-over uses gentle drip filtration at normal pressure, most often with single-origin beans, and lets the full extraction happen in view. Espresso forces water through the puck at nine atmospheres, which changes bean choice, grind size, taste intensity and even caffeine content.

The practical difference shows up in the cup and in equipment. A coffee pot american style brewer works at ambient pressure, while an espresso machine needs a fine grind and a compacted bed. Many cafés pull a shot and then add hot water to make an americano caffe, which keeps the espresso base but thins the intensity.

Pour-over and espresso are two completely different paths in the coffee world. One uses gentle drip filtration at normal pressure, while the other uses powerful extraction at nine atmospheres of pressure, resulting in comprehensive differences in coffee bean selection, grinding methods, taste intensity, and even caffeine content. This article will break down the essential differences between the two from three dimensions: coffee beans, brewing methods, and caffeine content, and include the practical steps for espresso and pour-over coffee at Front Street stores, helping enthusiasts understand the logic behind extraction and reliably reproduce a good cup of coffee at home.

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Coffee's popularity in China has been rising year by year, with momentum even vaguely approaching fast-moving consumer drinks like milk tea, though consumer groups have different preferences. When it comes to coffee, pour-over and espresso are two major types that cannot be avoided. Pour-over coffee is most often paired with single-origin beans; it presents the coffee's unadorned original appearance, not rough, not concealed, not compromised—it can be called another way of interpreting coffee. Overall, pour-over is gentler in character, though of course this is compared with espresso.

On a solitary afternoon, a cup of coffee, a book, and a soft chair—this simple combination itself constitutes a simple satisfaction. The beauty of pour-over single-origin lies in being able to witness the entire extraction process with your own eyes, watching the coffee drip down drop by drop, presenting its most authentic state. In contrast, espresso relies on nine atmospheres of pressure to complete extraction, which is also the second reason I say pour-over is gentle. Actually, espresso also has heart-stirring moments; you just may not have tasted them. Perhaps there is a third reason: pour-over makes it easier for people who originally do not drink coffee to accept coffee and enjoy its original appearance. It cannot be denied that espresso is more "foolproof" to make and easier for the public to accept, but perhaps it is precisely the maverick temperament of pour-over that has attracted so many followers.

Now let's look at what differences actually exist between pour-over coffee and espresso.

1. Different coffee beans

Pour-over coffee usually uses single-origin coffee beans as the brewing ingredient, with light and medium roasts as the main roasting levels, though of course some people prefer to use dark-roasted beans for pour-over.

Espresso generally blends multiple single-origin beans together, namely blended coffee beans, widely used to make cappuccino, Americano, latte, and other espresso drinks. Blended beans are mostly roasted darker so they pair well with milk and hot water. Making this type of coffee must use a professional espresso grinder; this is the prerequisite and key to producing high-quality espresso.

2. Different preparation methods Pour-over coffee mostly uses a dripper and completes extraction under normal atmospheric pressure; if using a moka pot or AeroPress, the extraction pressure can reach up to 3 bar (three atmospheres).

Espresso is extracted through an espresso machine, and the machine's pressure brings the extraction environment to 9 bar (nine atmospheres). The puck in the portafilter basket must withstand 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. Therefore, 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 Under the premise that the dose and grind size are the same, caffeine is a water-soluble substance, and the longer the brewing time, the greater the amount released. Pour-over brewing time is usually 1–3 minutes, while espresso is 20–30 seconds, so with the same dose and grind size, pour-over actually has a higher caffeine content. From this it can also be inferred that long-extraction coffees such as ice drip and cold brew will have a caffeine content considerably higher than other methods.

You can see that the coffee liquid brewed by pour-over and Espresso differs greatly in concentration. After single-origin coffee is added to milk, the milk will mask the coffee's own aroma and flavor, so ordinary coffee shops do not recommend adding milk to pour-over coffee.

How to make espresso

Many coffee enthusiasts unknowingly equip themselves with lots of coffee gear at home, and friends obsessed with espresso even stock up on espresso machines, preparing to extract it themselves. Here, Front Street uses store-produced espresso as a reference to briefly explain how to make an Espresso.

The coffee machine at Front Street stores is a commercial single-group "Lelit Bianca," which can adjust extraction by changing pressure, with a maximum pressure of 11 bar. A home coffee machine only needs to reach 9 bar of pressure to satisfy the functions of extraction and steaming milk foam, paired with an espresso grinder.

Front Street uses the capacity of a double portafilter basket, with a dose of about 18–20 grams, and Front Street uses 20 grams of coffee powder when producing. Usually the ratio of coffee powder to coffee liquid is 1:1.5–1:2.5. Front Street's extraction ratio is 1:2, that is, 20 grams of coffee powder extracts 40 grams of coffee liquid. Time is related to the flow rate of the coffee powder; generally a single extraction is controlled at 20–35 seconds, because within 20 seconds the coffee usually tastes thin, while exceeding 35 seconds makes it easy to over-extract and produce a burnt bitter taste. Front Street's espresso is mostly in the range of 28–30 seconds.

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

The taste and mouthfeel of Espresso are related to the coffee beans used. The espresso produced at Front Street stores uses Front Street Sunflower Warm Sun Blend. It is made by blending Honduras Sherry coffee and Ethiopia sun-dried Red Cherry at 7:3. Made into Espresso, it has rich crema, a very obvious whisky aroma, with vanilla cookies and berry acidity on the palate, solid flavor, and after drinking, the whole mouth is filled with various aromas.

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

How to make pour-over coffee

To make pour-over coffee at home, we need to equip the following utensils: gooseneck kettle, dripper, serving carafe, grinder, filter paper, electronic scale, thermometer. Here Yirgacheffe 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 stores; in addition, light-roasted coffee needs a higher water temperature to stimulate aroma, so 91–93°C is used, and a resin V60 01 dripper is used for extraction.

On online media, we can see various pour-over pouring techniques, such as one-pour, three-stage, 4-6 method, etc. Various techniques can make the flavor expression of the coffee in the cup different. Based on past brewing experience, Front Street suggests 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 soaking for too long.

If using 15 grams of coffee powder, a 1:15 coffee-to-water ratio, and 225 ml total water, the three-stage water amounts are divided into: 30 ml, 95 ml, 100 ml, and the weight shown on the electronic scale is: 30 g, 125 g, 225 g.

Fold the filter paper and fit it snugly into the dripper, wet the filter paper with a small amount of water while making them fit better, and pour out the water in the lower carafe. Then pour in the coffee powder and tap lightly to distribute the coffee bed evenly. 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, evenly and steadily circling outward. 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 all the coffee has dripped through, the total extraction time is generally about 2 minutes.

The reason everyone likes pour-over coffee so much is that when we actively explore the flavor expression of coffee extraction, adjust the brewing method according to different coffee bean varieties and roasting levels, carefully select brewing vessels to feel the different appearances coffee takes on under different extraction methods, and regulate grind size, temperature, flow rate, pouring technique, and other factors to adjust coffee extraction. Every step can bring a different taste and olfactory experience—this is the charm of pour-over coffee.

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