A demitasse or demi-tasse is a small cup used to serve espresso. It may also refer to the contents served in such a cup .
A demitasse typically has a capacity of approximately 60–90 millilitres (2–3 US fl oz), half the size of a full coffee cup (a tasse à café is about 120 millilitres (4 US fl oz)). They are typically ceramic and accompanied by matching saucers, but some coffeehouses and china companies also produce brightly decorated varieties. Another type of demitasse has a glass cup set into a metal frame, called a zarf.
Demitasse cups are small because they usually serve espresso, which is a stronger, more concentrated coffee, best served in smaller portions.