What Is Espresso and How to Make It Properly

If you've ever ordered a latte or cappuccino and wondered why some taste rich and balanced while others fall flat, the answer often comes down to the espresso shot underneath. A poorly extracted espresso leads to weak, sour, or bitter drinks—no matter how good the milk technique is. So what makes a great espresso, and how do you get it right?

The heart of every classic milk-based coffee is espresso: a 30-milliliter shot brewed in 23–25 seconds from 7 grams of finely ground coffee, using over 9 bars of pressure and a minimum 20-kilogram tamp. That small cup holds the balance of flavor, texture, and aroma that defines quality coffee.

What Exactly Is Espresso?

Espresso is a concentrated coffee brewed by forcing nearly boiling water (around 90°C) through tightly packed, finely ground coffee under high pressure—typically 9 bars or more. This method, originating in Italy, extracts a small volume of thick, intense coffee topped with a stable layer of crema. Unlike filter coffee, espresso is not sipped alone as often but serves as the base for almost all milk coffees and many classic Italian drinks.

Why Crema, Pressure, and Timing Matter

A proper espresso isn’t just about strength—it’s about texture, balance, and stability. The hallmark of a well-brewed shot is its crema: a reddish-brown, creamy foam that forms on top, made possible by the emulsification of coffee oils and carbon dioxide under pressure. This crema should be fine, persistent, and form quickly during extraction. Getting it right requires precise control over pressure (at least 9 bars), water temperature (not exceeding 90°C), and brew time (23–25 seconds). The grind must be fine, almost like powdered sugar, and the tamp force must exceed 20 kilograms to ensure even extraction. Without these factors, you won't get the rich mouthfeel, smooth balance of acidity and bitterness, or the thick texture that defines a quality espresso.

Espresso Equipment You Actually Need

To pull a proper espresso shot, you need more than just ground coffee. The essential tools include:

• An espresso machine capable of delivering consistent 9-bar pressure and accurate temperature control
• A grinder that can produce a fine, uniform particle size
• A tamper (filler) weighing around 700 grams for consistent tamping force
• A scale for measuring dose and yield accurately
• A knock box, milk pitcher, and thermometer (optional but helpful)

Other helpful tools mentioned in the original include a coffee spoon for measuring grounds, a wooden brush for cleaning coffee puck remnants, a black plastic brush for cleaning the group head and gasket, a pointed steel milk jug for steaming and pouring, and a proper portafilter basket and handle.

Step-by-Step: Pulling a Proper Espresso Shot

Here’s how to make espresso by the numbers, exactly as detailed in the original instructions:

1. Measure out 7 grams of finely ground coffee and place it into the portafilter basket.
2. Use a 700-gram tamper to press the coffee down firmly and evenly.
3. Lock the portafilter into the espresso machine’s group head.
4. Start the extraction—press the button or lever to let hot water flow through the coffee.
5. Stop the extraction after 23–25 seconds. The result should be about 30 milliliters (1 fluid ounce) of espresso liquid. Visually, the coffee portion should make up roughly one-quarter of the cup’s contents, with the rest being crema.

Frequently Asked Questions

What is the ideal espresso shot time?

The ideal espresso extraction time is 23 to 25 seconds. This time frame ensures that you get the right balance of flavors without over- or under-extracting the coffee.

How much coffee do you use for one espresso shot?

A single espresso shot typically uses 7 grams of finely ground coffee. This dose is standard for achieving the correct extraction and flavor balance.

What temperature should espresso be brewed at?

Espresso should be brewed at a water temperature of no more than 90°C. Staying below this threshold helps avoid excessive bitterness and preserves the coffee’s delicate acids and aromas.

How much pressure is needed to make espresso?

To make espresso, you need a minimum of 9 bars of pressure. This high pressure is what forces the water through the finely ground coffee and creates the characteristic crema on top.

What is crema and why is it important?

Crema is the reddish-brown, creamy foam that forms on top of a properly extracted espresso shot. It’s a sign of good extraction, indicating that coffee oils and carbon dioxide have emulsified properly under pressure. Crema contributes to the shot’s texture, aroma, and stability.

Do you really need a 20-kilogram tamp?

Yes, a tamp force of at least 20 kilograms is recommended to ensure the coffee puck is uniformly compacted. This consistency is critical for even water flow and proper extraction during the shot.

Recommended FrontStreet Blends for Authentic Espresso

For a true Italian-style espresso experience, start with FrontStreet Coffee’s Classic Blend. Designed specifically for espresso and Moka pots, it produces exceptionally creamy crema even with non-professional machines—perfect for lattes and cappuccinos. If you’re running a café or want strong value, try the Black Cocoa Blend: 100% Arabica with bold body and rich flavor at an affordable price. For high-volume shops, the Commercial Blend offers a balanced taste and lower cost without sacrificing drinkability. All three are optimized for espresso extraction and milk drinks. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.