What is a lungo?

A lungo — Italian for 'long' — is an espresso stretched at extraction: same dose (7-9 g or 18 g double), but a yield of 60 to 90 ml instead of the standard 25-40 ml, obtained by letting more water run through the puck. The ratio moves to 1:3 or even 1:4, producing a less concentrated and often more bitter drink because you push into over-extraction.

The lungo is the ristretto's mirror image: same coffee, same grind, same pressure, but prolonged extraction. In a traditional Italian bar, a lungo is made simply by letting the machine run longer — 30 to 45 seconds instead of the standard 25 — doubling or tripling the cup volume. The goal is the reverse of the ristretto: a less intense coffee, closer to a long drink, while staying on the espresso machine.

Contrary to a common claim, a lungo is not an americano. An americano dilutes a finished shot with hot water added after; a lungo extends the extraction itself, which means water travels through the puck the entire time. That difference matters: the lungo pulls more bitter compounds (tannins, degraded trigonelline, decomposed chlorogenic acid), making the drink more bitter than an equivalent-volume americano.

The third wave has largely left the lungo behind because light specialty roasts tolerate extended extraction poorly — they turn astringent. The lungo remains most relevant with medium-dark Italian roasts, where structured bitterness is wanted and balanced by body. Nespresso-style capsule machines popularised 'Lungo' (110 ml) as a commercial category, but that drink is closer to an americano: the yield comes from a larger dose, not from prolonged extraction on a standard dose.

Lungo TDS drops to 5-7 %, against 8-10 % for a normale espresso and 12-14 % for a ristretto. Caffeine stays proportional to the ground-coffee dose: a lungo built from 7 g still delivers about 60-80 mg of caffeine, same as an espresso from 7 g. In Belgium, lungo never really landed as a distinct order — most customers ask for an espresso, an americano or a filter — but it remains on tap in the classic Italian brasseries of Brussels, Charleroi and Liège.

Lungo in context — same dose, different yields