What is a cappuccino?
A cappuccino is an Italian drink built from one espresso (about 30 ml) and textured steamed milk in near-equal thirds — roughly one-third espresso, one-third hot milk, one-third microfoam — for a 150 to 180 ml total. By Italian custom it is a morning drink, finished before 11 am, and never ordered after a meal.
The word cappuccino traces back to the Capuchin friars, whose brown robes matched the colour of the drink. The modern form appears in Italy after the first steam-driven espresso machines of the 1900s-1910s, but the cappuccino as we know it — with silky microfoam rather than a dry, stiff head of bubbles — is a far more recent invention, popularised in Seattle and Milan through the 1990s alongside the rise of latte art.
The codified Italian standard, defended by the Istituto Nazionale Espresso Italiano, pins the cappuccino at 25 ml espresso plus 100 ml steamed milk, final temperature 55-65 °C, total volume close to 150 ml. Third-wave practice allows a bit more milk (150-180 ml total) and prizes a very fine microfoam — bubbles invisible to the naked eye, a glossy wet-paint texture — that lets baristas pour hearts, rosettas and tulips.
Cappuccino milk tops out at 60-65 °C. Beyond that, proteins denature, the flavour turns sulphurous and the foam collapses. Whole milk (3.5 % fat) gives the silkiest mouthfeel thanks to fat content; semi-skimmed foams more but feels thinner. Plant milks vary wildly: barista-grade oat milk is now the default plant alternative in specialty bars because it textures cleanly, while plain almond remains stubbornly hard to foam.
In Belgium, the Italian 'no cappuccino after 11' rule never stuck — an afternoon cappuccino with a speculoos or a Dinant biscuit is routine from La Hulpe to Bruges. Pours are also often more generous than in Milan, commonly 180 to 220 ml, sometimes billed as 'grand cappuccino' on Flemish menus. Worth knowing: a cappuccino is not a latte macchiato — the macchiato pours the milk first, then the espresso through it, producing visible layers.
Cappuccino vs latte vs flat white
| Drink | Espresso | Milk | Foam |
|---|---|---|---|
| Single espresso | 30 ml | 0 | Crema |
| Cappuccino | 30 ml | 90-120 ml | Microfoam 1-1.5 cm |
| Flat white | 40 ml double ristretto | 120-130 ml | Microfoam 0.5 cm |
| Latte | 30-40 ml | 200-240 ml | Fine microfoam |
| Macchiato | 30 ml | 15 ml milk | Dot of foam |
| Cortado | 30 ml | 30 ml | Very thin microfoam |