A typical demitasse cup holds around 3 ounces. However, it is meant to be filled only half full with approximately 1.5 ounces of coffee. In French, "demitasse" means "half cup."
The demitasse is around 2.25 inches in both height and width, and it is presented on a saucer 4.5 to 5 inches in diameter.
A demitasse of coffee will traditionally be served in a separate room at the end of a formal dinner. Although the coffee typically has a low caffeine content, its strong flavor is intended to cleanse diners' palettes of the taste of wine. Brandy, liqueurs and entertainment follow the demitasse, according to etiquette.