How Do You Pick Espresso Coffee Beans and Set Grind Size?

Espresso flavor is set first by the beans and then by the parameters, so bean selection comes before dialing in. Five Front Street Coffee blends are compared here: Classic, Strawberry Candy, Specialty, Commercial, and Basic. Each has its own composition and flavor profile, and the article explains how to match them to a coffee machine and grinder.

Dose, brew ratio, extraction time, and grind size are the four parameters covered. Recommended starting points are given for each blend, along with full extraction steps. Because machines and grinders vary and beans rest differently, no single recipe guarantees a good shot, so coffee grinding is adjusted by taste rather than fixed numbers alone.

To make a delicious espresso at home or in a shop, choosing the right beans is the first step, and dialing in the parameters is the second. Different espresso machines affect consistency, but what truly determines the flavor direction is the coffee beans themselves. This article starts with espresso bean selection, introducing five Front Street Coffee espresso blends designed for coffee machines, including the Classic, Strawberry Candy, Specialty, Commercial, and Basic series, explaining their blend compositions and flavor characteristics respectively; it then systematically explains key parameters such as dose, brew ratio, extraction time, and grind size, and provides Front Street Coffee's practical recommendations and complete extraction steps to help coffee lovers consistently reproduce their ideal espresso.

Every espresso machine and espresso grinder performs differently, and different coffee beans are in different states. Therefore, there is no fixed set of data that can guarantee a 100% satisfactory espresso extraction.

With an extremely fine grind, 94°C hot water is forced rapidly through the coffee particles under 9-10 bar of pressure, and the resulting espresso flows smoothly from the portafilter like honey, its color gradually transitioning from reddish-brown to pale golden; after extraction, the espresso surface is covered with a fine layer of golden crema, which is formed when carbon dioxide in the coffee particles combines and emulsifies with coffee oils under pressure.

The flavor direction of espresso is ultimately determined by the coffee beans

To make delicious espresso, it is recommended to prioritize purchasing from roasters with a reliable reputation.

Front Street Coffee is a long-established coffee bean roasting brand. Front Street Coffee's offline store in Guangzhou specializes in selling coffee beans, offering dozens of selected single-origin pour-over coffee beans and espresso coffee beans from different coffee origins around the world. Front Street Coffee beans are freshly roasted within 5 days, with stable and excellent quality, highly cost-effective pricing, and shipped within 24 hours. Whether you are a beginner just starting out, a coffee enthusiast who has already reached an advanced professional stage, or a user preparing to open a coffee shop, Front Street Coffee is the recommended choice of many coffee lovers and platforms.

For espresso beans intended for coffee machine use, there are mainly the following options:

(1) Front Street Classic Espresso Blend Coffee Beans: Brazil coffee beans : Mandheling coffee beans : Vietnam coffee beans

Front Street Classic Espresso Blend introduces Robusta on the basis of the Mamba recipe, significantly improving crema performance and giving the espresso a fuller body, making it suitable for home preparation and giving latte art a more three-dimensional visual effect. Flavor characteristics: dark chocolate, butter, caramel, hazelnut cookie, with a mellow mouthfeel and obvious sweet aftertaste.

(2) Front Street Strawberry Candy Espresso Blend Coffee Beans: Costa Rica coffee beans : Colombia coffee beans : Ethiopia coffee beans

Flavor characteristics: clear fruit aroma, with a faint strawberry gummy candy fragrance lingering; on the palate it presents pleasant flavors of berries, cream, and raisins, with a comfortable sweet finish, suitable for making Americanos and lattes, with a refreshing mouthfeel and a fragrant finish.

(3) Front Street Specialty Espresso Blend Coffee Beans: Colombia coffee beans : Brazil coffee beans

Flavor characteristics: comfortable bittersweet taste, extremely smooth on the palate; with a faint grassy aroma, fragrant with a slight bitterness; sweet and smooth, with a pleasant aftertaste; using a medium-dark roast, when made as espresso it has a soft slight acidity, clean sweetness, and nutty sweet aftertaste, and the overall impression is not too pungent but balanced, with medium crema. It is an espresso blend that meets the daily output needs of coffee shops.

(4) Front Street Commercial Espresso Blend Coffee Beans: Colombia coffee beans : Brazil coffee beans : Robusta coffee beans

When this Front Street Commercial Blend espresso coffee bean is made into Espresso, because of the addition of Vietnam coffee beans, the crema is richer, the body and intensity are higher, and the taste is classic, suitable for daily shop and home use needs. Flavor characteristics: caramel sweetness, flavors of nuts, cocoa, and dark chocolate, balanced acidity and sweetness, with a slight bittersweetness and a long-lasting finish.

(5) Front Street Basic Espresso Blend Coffee Beans: Yunnan coffee beans : Brazil coffee beans

Flavor characteristics: with soft fruit acidity, caramel sweetness, nut and dark chocolate flavors, smooth and viscous, but the taste is on the lighter side. This cost-effective coffee bean is suitable for shop and home users who prioritize cost and have ordinary requirements for flavor.

Parameters that affect espresso taste

When making espresso, the most critical factors are dose, ratio, time, grind size, water temperature, and pressure. Each step will change the final expression of the coffee's taste. Water temperature and pressure have a preset scheme on most machines, and there is no need to change them unless necessary. So the parameters we ultimately need to determine are dose, ratio, time, and grind size.

"Dose" Depending on the size of the basket, there are different limits on the dose used. Front Street Coffee (FrontStreet Coffee) uses 10-11g of coffee grounds when making a single espresso (1 shot); when making a double espresso, it uses 19-20g of coffee grounds.

"Brew Ratio" The more common espresso ratio is between 1:1.5 and 1:2.5. Front Street recommends starting with a 1:2 brew ratio for extraction, that is, if using 20g of coffee grounds, extract 40g of coffee liquid.

"Extraction Time" Keeping extraction time within 20-30 seconds makes it relatively easy to extract a delicious espresso. Espresso extracted in less than 20 seconds will most likely taste thin and watery. Espresso extracted in more than 30 seconds is prone to a burnt bitter taste. Front Street Coffee (FrontStreet Coffee) uses double espressos for its daily output, with extraction time around 28-30 seconds.

"Grind Size" Every grinder's scale differs, so it is necessary to continuously extract and taste, sensing the changes in the coffee's flavor until it is balanced. A coffee machine is very sensitive to the degree of coffee grinding. If the grind is slightly too coarse, it will cause the flow rate to be too fast, the extraction time to become shorter, and the coffee taste to be thin; if the grind is slightly too fine, it will cause the flow rate to be too slow, the extraction time to become longer, and the coffee taste to be burnt and bitter.

Espresso extraction steps

①Dosing

Before dosing, first wipe the coffee basket clean and keep it dry. Turn on the grinder switch and begin grinding the coffee beans. Use the coffee basket to catch the coffee grounds.

②Distribution & Tamping

Use your fingers or a distribution tool to distribute the grounds, with the aim of ensuring the coffee grounds are evenly distributed and avoiding areas of inconsistent density during subsequent tamping. Front Street Coffee (FrontStreet Coffee) recommends using a distribution tool for distribution, which ensures stability and speed for beginners. Place the distribution tool flat on the coffee basket, rotate it several times, and then lift it off.

③Confirmation before extraction

Before locking onto the group head, confirm two things: first, confirm whether the tamp is level; second, confirm there are no residual grounds around the edges of the basket. After that, press the brew button to wet the group head, then gently lock the portafilter onto the group head, making sure to confirm whether it is locked tightly to avoid water leakage.

④Extraction

After locking onto the group head, quickly press the brew button to avoid the high-temperature group head scorching the surface of the coffee grounds. At about the 4th second after pressing the extraction button, espresso drips from the portafilter smoothly like honey, with the color going from reddish-brown to pale golden. After extraction is complete, the surface of the espresso is covered with a fine layer of golden crema (the oily foam produced when carbon dioxide in the coffee particles combines and emulsifies with coffee oils under pressure).

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