A Moka Pot is not used to make espresso. In order to create espresso, you need up to 9 bars of pressure, much higher than a Moka pot can generate. What a Moka Pot can do is make a unique and delicious coffee that is much stronger than regular coffee. It is perfectly suited for replacing espresso in espresso-based milk drinks. You may also be interested in reading this excellent post with various Espresso Drink recipes.