Series · SERVICIO · 04 of 10
The empty space
Filling a cup to the rim is a mistake of volume and smell.
The classic tasting proportion calls for almost three times as much space as liquid: for a 40 ml espresso, the cup needs a capacity of around 110 ml.
The air above is the chamber where volatile aromas concentrate before you bring your nose close. It also lets you move the cup without spilling a drop. Empty space is part of coffee too.