A cup of standard American coffee is 150 ml, and you can directly use the coffee cup labeled 150 ml;

A standard espresso cup is 30ml, and 30, 40 or 50ml ounce cups or coffee cups will do. You can use cappuccino cups and fancy cups if necessary.

The above refers to the standard operation, which does not mean that it must be used in this way.

How can I be so particular about drinking coffee alone? You can use any cup you want. The amount of coffee is also determined by yourself.