A Ristretto is a restricted espresso pulled with less water (1:1 to 1:1.5 ratio) — it is highly concentrated and sweeter. A Lungo is a stretched espresso pulled with more water (1:3 to 1:4 ratio) — it is milder in body, but the longer extraction often makes it more bitter.

What is a ristretto and what is a lungo?

A Ristretto is a restricted espresso pulled with less water (1:1 to 1:1.5 ratio) — it is highly concentrated and sweeter. A Lungo is a stretched espresso pulled with more water (1:3 to 1:4 ratio) — it is milder in body, but the longer extraction often makes it more bitter.

Why that is

Ristretto, espresso, and lungo are not fundamentally different beverages — they are the exact same brewing process, just cut at different brew ratios. The amount of dry coffee in the portafilter remains identical (typically 18 g); only the final liquid volume in the cup changes.

Ristretto (Italian for “restricted” or “narrow”) uses significantly less water: 18 g of coffee yields just 18–27 g of liquid (a 1:1 to 1:1.5 ratio). The shot is cut much earlier than a standard espresso. Because of this, only the most easily soluble compounds make it into the cup — the bright fruit esters, the sugars, and the heavy oils. The stubborn, bitter compounds that extract late in the process are left behind in the puck.

The result is a shot that is fiercely concentrated, syrupy thick, and generally much sweeter than a standard espresso. The crema is incredibly dense, and the body is massive. Many specialty baristas swear by ristretto ratios as the base for milk drinks like flat whites, because the intense concentration cuts through the milk perfectly without diluting it.

Lungo (Italian for “long”) uses significantly more water: 18 g of coffee yields 54–72 g of liquid (a 1:3 to 1:4 ratio). The shot runs much longer than a standard espresso. Because the water keeps flowing, it eventually moves past the sweet spot and begins heavily extracting bitter compounds and harsh tannins.

The result is a shot with a much thinner, milder body, but paradoxically, it often tastes much more bitter than a standard espresso due to the extended extraction. The crema is pale and thin. Note: a Lungo is not the same thing as an Americano. In a Lungo, all of the water is forced through the puck under 9 bars of pressure. In an Americano, a standard espresso is simply diluted with hot water after the fact.

By the numbers (assuming an 18 g dose):

• Ristretto: 18–27 g output, ~15–20 seconds
• Espresso: 36 g output, 25–30 seconds
• Lungo: 54–72 g output, 35–50 seconds

Which style is “best” depends entirely on the bean. Dark, chocolatey roasts often shine as a ristretto — delivering a sweet, punchy, low-bitterness syrup. Very light, fruity roasts can sometimes be stunning as a lungo, as the extra water helps fully unravel their dense, complex acidity.

In practice at Green Wall Coffee

At Sophienstraße 27, our standard house espresso is pulled at a 1:2 ratio. We will happily pull a ristretto upon request — they are incredibly popular for our flat whites. Almost no one orders a lungo, but if someone does, I give them an honest recommendation: if we’re pouring our dark roast, you’re much better off getting a standard espresso lengthened with hot water (an Americano). If we’re pouring a light roast, a well-dialed lungo can actually be a fascinating experience.

Related questions

• What is the ideal espresso ratio?
• How do I make the perfect espresso?
• What is an Americano and how is it different from a lungo?

You can find more in-depth information in the article How to make perfect espresso. Or drop by Sophienstraße 27 — Mon–Fri 8am–5pm, Sat 10am–5pm.