Normally, cups for espresso are small, porcelain cups of 60 ml.
The cup should be made from thick porcelain, and shouldn’t be too wide, so the coffee will stay hot longer. As a rule, the average espresso cup has a diameter and height of about 5 centimeters. However, there can be various other forms.
These days it’s not surprising to see espresso served in disposable plastic cups, a simple glass, a regular mug, or even in a wine glass. In general, though, good coffee houses serve their espresso in the thick porcelain cups mentioned above, usually with their logo on them.