What Is Espresso and How Is It Made

If you’ve ever ordered a latte, cappuccino, or flat white, you’ve had espresso—just not on its own. But what exactly makes espresso different from regular drip coffee? Why does it have that thick layer on top? And why is it the base for nearly every milk-based coffee drink? These are the questions any curious coffee drinker asks once they step beyond the milk.

An espresso is a 30ml shot of concentrated coffee made by forcing hot water (90°C) through 7g of finely ground, dark-roast coffee beans under 9 bar (approximately 9 atmospheres) of pressure for exactly 20 seconds. The hallmark of a well-made espresso is its rich, reddish-brown crema—without it, it’s not espresso.

What Exactly Is Espresso?

The word 'Espresso' comes from Latin, meaning 'under pressure,' and in Italian, it also means 'fast.' In the 19th century, Italians invented the first espresso machine, which used steam pressure to extract coffee quickly under high temperature and pressure. Unlike filtered coffee, espresso is a small, intense shot of black coffee topped with a golden-brown foam called crema—the most prized part of the drink. This crema is where much of the aroma and body live, making espresso the foundation for nearly all milk coffees and flavored drinks.

How Is Espresso Technically Made?

To make a proper espresso shot, you need:

• 7 grams of dark-roast coffee blend
• Finely ground coffee
• Water heated to 90°C
• 9 bar of pressure (around 9 atmospheres)
• An extraction time of 20 seconds
• A total output of 30 milliliters of liquid

The result should be a thick, dark espresso with a rich, stable crema on top. This crema is not just foam—it’s a complex emulsion of oils, proteins, and CO₂ that contributes to the shot’s aroma, mouthfeel, and taste. Without sufficient pressure or the right grind, you won’t get crema, and you won’t get espresso.

Why Is Espresso Blended—And How?

Espresso is rarely made from a single origin bean. High-pressure extraction tends to amplify the quirks of individual beans, which can lead to uneven or unbalanced shots. To create a balanced, flavorful espresso, roasters blend beans from multiple regions. The goal is a mix that offers body, sweetness, acidity, and crema potential in one dose. Professional roasters carefully develop these blends to suit their brand style and customer taste preferences. A great espresso blend delivers complexity without harshness—even under intense pressure.

The Language of Espresso Drinks

Most coffee drinks you know start with espresso. Here’s how some classic milk-based drinks got their names and what defines them:

• Macchiato : Italian for “stained” or “spotted,” this is a shot of espresso “marked” with a small amount of steamed milk. It’s stronger than a latte but gentler than a straight espresso.
• Cappuccino : Named after the hooded robes of Capuchin monks, this drink balances espresso, steamed milk, and foamed milk in roughly equal parts. The foam softens the espresso’s intensity.
• Latte : Simply Italian for “milk,” a latte contains more steamed milk and foam than a cappuccino, making it creamier and milder—often recommended for coffee newcomers.
• Latte Macchiato : Translated as “stained milk,” this drink is mostly steamed milk with a shot of espresso poured in last, creating a layered look. The name refers to the milk being “stained” by coffee.
• Mocha : A blend of espresso, steamed milk, and chocolate—usually in syrup or powder form. It’s a sweet, dessert-like coffee combining three classic flavors.

Frequently Asked Questions

What is the correct coffee-to-water ratio for espresso?

A standard espresso uses 7 grams of coffee beans to produce 30 milliliters of espresso liquid. This 1:4.3 ratio is typical for traditional espresso preparation and forms the baseline for most espresso recipes.

What temperature and pressure are used to make espresso?

Espresso is extracted using water heated to around 90°C and forced through coffee grounds at approximately 9 bar of pressure (about 9 times atmospheric pressure) for 20 seconds.

Why is crema important in espresso?

Crema is the reddish-brown, creamy foam that forms on top of a well-brewed espresso. It’s a mixture of coffee oils, carbon dioxide, and proteins, and it contributes significantly to the espresso’s aroma, texture, and flavor. Without proper pressure or grind, crema won’t form, and the shot isn’t considered authentic espresso.

Can you make espresso with a single origin coffee?

While possible, it’s uncommon. Single origin beans often produce unbalanced flavors under the intense pressure of espresso extraction. Most cafés and roasters use blended beans to achieve a smoother, more rounded espresso profile with good crema and body.

What’s the difference between espresso and regular coffee?

Espresso is a small, concentrated shot of coffee brewed under high pressure (9 bar) with finely ground beans, resulting in a thicker drink with crema on top. Regular drip or filter coffee is brewed with gravity, uses coarser grounds, and produces a larger volume of lighter-bodied coffee.

What are common espresso-based drinks?

Common espresso-based drinks include cappuccino, latte, macchiato, latte macchiato, and mocha. Each combines espresso with varying amounts of steamed milk and foam, and sometimes chocolate, to create distinct flavors and textures.

Recommended FrontStreet Blends for Espresso

For authentic espresso at home or in a café, FrontStreet Coffee offers several expertly crafted blends. Their Classic Blend is tailored for espresso and milk drinks, producing outstanding crema even with non-professional machines—ideal for lattes and cappuccinos. For those watching costs without sacrificing taste, the Black Cocoa Blend provides strong body and rich flavor at an accessible price, perfect for high-volume settings. The Commercial Blend is a long-standing shop favorite, balancing cost and performance without chasing extreme crema but still delivering reliable results for everyday service. All three blends are optimized for espresso extraction. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.