Why Does an American Coffee Machine Need a Coarse Grind?

Drip brewers, also called American coffee makers, spray hot water over the coffee bed from a showerhead-like outlet and run at fairly high temperatures. A coarse grind keeps that water from pulling too much out of the grounds, so the cup stays balanced instead of turning bitter and over-extracted, unlike espresso, which needs a fine, firmly tamped puck.

The article covers bean selection, the coffee-to-water ratio for americano coffee, and the steps for hot and iced versions. Getting the grind size right for how to use an american coffee machine matters more than most people expect, because extraction speed and contact time decide how much sweetness and acidity reach the cup.

Americano is most commonly served in everyday cafés as espresso diluted with water, but true American coffee originates from the drip-style American coffee maker. Why are drip devices better suited to coarse-ground coffee? How does grind size affect extraction results? Drawing on Front Street Coffee's practical experience, this article outlines the extraction characteristics of drip coffee makers, suitable coffee bean choices, and how to determine the coffee-to-water ratio for Americano, along with specific brewing parameters and steps for hot and iced Americano, helping coffee enthusiasts understand the matching logic between coarse grinding and drip brewing.

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When people mention Americano, many first think of the espresso-plus-water version commonly found in cafés, a method that actually originated in Italy. What truly represents American coffee is made with an American coffee maker, which is why these machines are also called drip coffee makers. The grind size they use is noticeably coarser than that of espresso machines. Below, Front Street Coffee (FrontStreet Coffee) explains why coarse-ground coffee beans are better suited to drip coffee makers.

Why are coarse-ground coffee grounds suitable for drip coffee makers?

The English word for Americano is "Americano," which can refer either to black coffee made with a drip pot or to a drink made by adding water to espresso. However, most cafés in China currently serve the latter, while the former is more often called "drip coffee" to distinguish it.

According to Front Street Coffee (FrontStreet Coffee), when brewing with a drip pot—that is, an American coffee maker—a coarse grind is less likely to cause over-extraction. The reason is that the hot water outlet of an American coffee maker resembles a showerhead, spraying water onto the coffee bed, and these machines tend to run at higher water temperatures; if the grind is too fine, over-extraction easily occurs.

This is one reason why a coarse grind suits drip coffee. By contrast, with an espresso machine, you must tamp the coffee grounds firmly when making espresso so that the puck creates resistance against the high-pressure hot water, allowing effective extraction of the essence. Therefore, espresso machines are more sensitive to grind size: the more uniform the grind, the tighter the puck after tamping, the fewer the gaps, and the more even the resistance to water flow—only then can you successfully make a cup of Espresso. This is why espresso requires an extremely fine grind.

So what coffee beans are used to make Americano?

In the case of drip-style Americano, the beans used are the same as those for pour-over coffee, typically single-origin beans from a single region. But as far as most cafés today are concerned, the espresso base of Americano is mostly made with espresso blend beans, and espresso machines have a characteristic when extracting espresso: under high pressure, they amplify the flavors of the coffee beans.

Therefore, single-origin coffee beans are not suitable for extraction with an espresso machine; otherwise, the flavors are easily amplified, producing undesirable tastes. A better choice is to blend coffee beans from multiple regions, commonly a mix of two or three beans. The purpose of blending is clear: to combine the flavors of different coffee beans into a new, more balanced overall expression that can also become a café's signature.

For example, the house blend Sunflower Warm Sun series used at Front Street Coffee (FrontStreet Coffee) is Front Street's proudest blend to date, composed of Honduras Sherry coffee and Yirgacheffe sun-dried Red Cherry coffee, with rich chocolate, caramel, and tipsy flavors. Next, Front Street Coffee (FrontStreet Coffee) will explain how to make iced Americano.

How do you make Americano?

As Front Street Coffee (FrontStreet Coffee) said above, making Americano means adding one shot of espresso to a cup of water. What naturally requires attention is the coffee-to-water ratio for Americano: how much water to add, and how much coffee powder to use to make the espresso. Every coffee shop has a different Americano coffee-to-water ratio, so Front Street Coffee (FrontStreet Coffee) will explain using its own Americano as an example.

First, the traditional Americano coffee-to-water ratio is 1:8, meaning a double espresso (40 ml) diluted with 320 ml of water; this can be adjusted to about 1:7 or 1:8 according to the shop's serving cup size, but this does not apply to all beans. The Americano made by Front Street Coffee (FrontStreet Coffee) with Warm Sun blend beans uses 1:4.5. So how did Front Street determine the ratio suitable for making Americano with its own blend beans?

First, extract a double espresso (or however many servings you need), pour the extracted espresso into a sharing pot placed on a scale, then add water sequentially according to the ratio and taste to determine the appropriate range. For example, after extracting 40 g of coffee liquid, start from 1:4, that is, pour in 160 ml of water, then taste; pour in another 20 g of water (ratio 1:4.5) and taste; likewise pour in another 20 g of water (ratio 1:5) and taste, repeating this process until the suitable ratio range is determined.

Because each tasting consumes some of the coffee liquid, you cannot accurately pinpoint the right Americano coffee-to-water ratio this way; the method only helps you find the suitable range, after which you need to remake the Americano within that range. If, in the above method, you taste that the ratio for making Americano with Warm Sun blend falls between 1:4 and 1:5, then remake one Americano at 1:4, one at 1:4.5, and one at 1:5, and finally determine that 1:4.5 is the most suitable ratio for Warm Sun blend beans as Americano. At this coffee-to-water ratio, the wine-like notes and cocoa finish of Warm Sun blend are better highlighted without losing body. Front Street Coffee's (FrontStreet Coffee) hot Americano parameters are 40 ml espresso : 180 ml of an 85°C hot water/ice water mixture.

Front Street espresso extraction parameters:

Grinder: Flying Horse 900N

Grind size: 1.6

Pressure: 9 bar

Temperature: 90.5–96°C

Time: 20–30 sec

Dose: 20 g (double espresso)

Yield: 40 ml

Extracted espresso flavor: smooth mouthfeel, medium body, with obvious fruit acidity on entry accompanied by faint berry aroma, whiskey notes, rich chocolate flavor, and a clear sweet aftertaste.

Iced Americano is simply made by adding ice water to espresso at a 1:7 ratio. Front Street's steps for making iced Americano:

1. Front Street extracts a double espresso using the parameters mentioned above.

2. Prepare 280 ml of ice water mixture.

3. Pour the double espresso into the ice water mixture, stir well, and it is ready to drink.

Iced Americano flavor description: The Warm Sun blend used by Front Street Coffee (FrontStreet Coffee) has obvious chocolate and wine notes; after being made into espresso and diluted with ice water, it becomes a refreshing, smooth drink with fairly pronounced wine-like notes, lasting aroma, and a chocolate finish.

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

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