Episode Details

Macchiato means stained or spotted, and the name began as a workflow fix. In busy mid 20th century Italian espresso bars, a plain espresso and one with a splash of milk looked identical under the crema, so baristas marked the milk cups with a dollop of foam that waiters could spot at a glance. Portugal's version, café pingado, means coffee with a drop. The traditional recipe has the highest espresso to milk ratio of any standard coffee drink: five to ten grams of milk, one or two teaspoons, heated to 60 to 66 degrees Celsius, where lactose tastes sweetest before the whey proteins scald.

Italian immigrants brought Gaggia machines and the macchiato to Australia after World War II, where it met a British taste for milky drinks and became the mac. A long macchiato uses a double shot with a dash of textured milk, frothed before it is heated for denser microfoam, and leaves most of the glass empty. In Perth the long mac topped up fills the glass with milk for commuters, while Melbourne half fills it with water for slow café sipping, leaving a name that means stained on a cup that can be 90% milk.

• The foam dot let waiters carrying trays of identical cups tell which ones held milk.
• Heating the milk past about 70 degrees Celsius denatures whey proteins and brings a cooked, sulfurous taste.
• Steamed milk froths and heats at once, while textured milk is aerated cold first, trapping smaller bubbles.
• Perth's topped up version suits takeaway commuting, since a tiny traditional macchiato goes cold in minutes.
• Melbourne's water diluted macchiato borrows the engine of a long black and keeps the foam spot on top.