How to Brew the Best Espresso: The 4 Key Elements

Making great espresso isn’t just about pushing water through coffee—it’s about harmony. If your espresso lacks balance, lacks crema, or just doesn’t taste right, the issue likely comes down to four key elements that Italian baristas have long understood: the coffee blend, the grind size, the espresso machine, and the barista’s skill. Master these, and you’ll consistently pull shots that are rich, balanced, and full of crema.

To brew top-tier espresso, focus on the 4 Ms: Mistura (blend), Macinino (grind), Macchina (machine), and Mano (technique). Use a blend of at least five beans, aim for a 7g dose in 20–30 seconds, keep your machine at 90°C and 9 bars, and train your technique for consistency.

1. Mistura: The Coffee Bean Blend

The foundation of any great espresso is the blend—or Mistura. In Italy, a traditional espresso blend consists of at least five different coffee beans. Each bean contributes unique flavours: some add sweetness, others bring acidity or body. Knowing exactly which beans are in your blend helps you understand and communicate the flavour profile to customers—or to yourself. If a customer asks, “What beans are in your espresso?” and you don’t know, it’s hard to convey the craft behind the cup. Always ask your supplier for detailed blend information before purchasing.

2. Macinino: Grinding for the Perfect Shot

The second M is Macinino, or the grind. For ideal espresso extraction, aim for a 7g dose to produce 20–35ml (about 20–35cc) of espresso in 20–30 seconds. Getting there means fine-tuning your grinder. If extraction takes under 20 seconds, your grind is too coarse—make it finer. If it drips slowly and takes over 30 seconds, your grind is too fine—adjust coarser. But after changing the grind setting, wait a moment: residual coffee in the grinder will still fall first, so run the grinder for 10 seconds to clear it before dosing.

Also, monitor the bean level in your grinder’s hopper. Too many beans can overload the burrs, while too few affects consistency. Keep the hopper around 6–7 servings full. Pre-set your grinder to dispense exactly 7g per pull—this ensures uniformity and efficiency, especially during service. Track how many grams your grinder outputs per second to better control your dose. And yes, always weigh or time your shots to stay precise.

3. Macchina: Machine Settings and Capabilities

The third critical factor is the espresso machine—or Macchina. To extract great espresso, your machine must deliver water at around 90°C under 9 bars of pressure, for 20–30 seconds. These conditions extract the best flavours without burning the coffee or producing off-notes. Too little pressure (below 9 bars) leads to under-extracted, pale espresso. Too much pressure (above 9 bars) brings out unpleasant, harsh flavours and a muddy crema.

Machine behaviour varies. For example, the CIMBALI model used by the author delays flow due to its steam function—it takes about 4–5 seconds before extraction begins evenly on both sides. To help the steam function work better and saturate all coffee grounds, a slightly finer grind is recommended. Know your machine’s personality: preheat it, understand its flow timing, and match your grind and dose accordingly.

4. Mano: The Barista’s Technique

The final M stands for Mano—the skill and hands-on approach of the barista. Even with perfect beans, grind, and machine, poor technique ruins the shot. But overthinking it slows service. A smart compromise: pre-dose and tamp a few shots ahead when possible, ensuring each filter basket gets exactly 7g. Tamp well, then brew immediately—don’t let the coffee sit in a hot portafilter, or heat will degrade the grounds and flatten the flavour.

Freshly ground coffee is ideal, but beware: right after grinding, coffee releases heat and CO₂, which, under 9 bars and 90°C, can scorch the grounds and create bad aromas. In fact, tests showed that grinding coffee (like Illy) and letting it rest for a week produced better-looking crema and unchanged flavour. Most coffee only starts to degrade after 7–10 days. So while freshness matters, so does proper handling.

Frequently Asked Questions

How many coffee beans should be in an espresso blend?

An authentic Italian-style espresso blend should include at least five different types of coffee beans. This allows for a balanced flavour profile, combining sweetness, acidity, body, and aroma from different origins. Knowing the exact beans in your blend helps you control and explain the taste to customers.

What is the ideal espresso extraction time and yield?

The ideal espresso shot uses 7g of coffee and extracts 20–35ml (cc) in 20–30 seconds. This balance ensures proper flavour extraction without under- or over-extracting the coffee. Adjust grind size to hit this window.

What grind size should I use for espresso?

The correct espresso grind is fine, but exact settings vary by machine and bean. The goal is to pull a 7g shot in 20–30 seconds. Start fine, then adjust coarser if it runs too slow (>30 sec) or finer if too fast (<20 sec). Always clear residual grounds after changing the grind setting.

Does espresso machine pressure really matter?

Yes. Ideal espresso extraction happens at around 9 bars of pressure. Too low (below 9 bars) results in weak, under-extracted coffee, while too high (above 9 bars) causes bitter, over-extracted shots with off-flavours and poor crema. Make sure your machine is calibrated correctly.

Should I grind coffee right before brewing espresso?

Preferably yes—but be aware that freshly ground coffee releases heat and gas. Brewing immediately can scorch the grounds under high pressure and temperature. Let the coffee sit for a few seconds after grinding, and don’t let it sit in the portafilter too long before pulling the shot.

How much coffee should I use for a single espresso shot?

Use 7g of ground coffee per single espresso shot. This dose, extracted in 20–30 seconds, yields about 20–35ml of espresso and forms the basis for balanced flavour and proper crema in traditional espresso preparation.

Recommended FrontStreet Coffee Beans for Espresso

For classic espresso blends, try FrontStreet Classic Blend or Commercial Blend, both built on traditional Italian profiles with added Robusta for bold crema, deep chocolate, and toasted bread notes—perfect for milk drinks and strong black espresso. If you prefer a smoother, nuttier profile, FrontStreet Specialty Blend offers Brazilian-forward sweetness with notes of almond and caramel, ideal for balanced espresso shots or milk-based coffees. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.