Cappuccino is a coffee drink that today is composed of double espresso and hot milk, with the surface topped with foamed milk. Cappuccinos are most often prepared with an espresso machine. The double espresso is poured into the bottom of the cup, followed by a similar amount of hot milk, which is prepared by heating and texturing the milk using the espresso machine steam wand. The top third of the drink consists of milk foam; this foam can be decorated with artistic drawings made with the same milk, called latte art.
In a traditional cappuccino, as served in Europe and artisan coffee houses the total of espresso and milk/foam make up between approximately 150–180 ml.
Commercial coffee restaurant chains more often serve the cappuccino as a 360 ml drink or larger.
Cappuccino is traditionally small (max 180 ml) with a thick layer of foam, while 'latte' traditionally is larger (200 ml-300 ml). Caffè latte is often served in a large glass; cappuccino mostly in a 150 – 180 ml cup with a handle. Cappuccino traditionally has a layer of textured milk micro foam exceeding 1 cm in thickness; micro foam is frothed/steamed milk in which the bubbles are so small and so numerous that they are not seen, but it makes the milk lighter and thicker. As a result, the micro foam will remain partly on top of the mug when the espresso is poured in correctly as well as mix well with the rest of the cappuccino