title_body: Bialetti Brikka..is 2 cup really 1 cup?
upvoted_answer: The Bialetti two Cup stove top produces 100ml of coffee. That is in fact much more than two average espressos. A double shot pulled from an espresso machine would have between 40ml and 60ml.
  Your Brikka should thus produce roughly two double shots of espresso. Well it is not actually espresso, but that's a whole different topic.
  As far as I know there is only one "marker", which is actually the pressure valve. You should fill the water slightly below the valve. Then you'll get the 100ml.