Human: What is the difference between types of espresso? Assistant: 
The primary difference between types of espresso is in the grind of the coffee; finer ground coffee yields a more intense, concentrated flavor, while coarser grinds result in a milder taste with more crema (frothy layer on the surface). Additionally, different brewing methods can affect the strength, aroma, and body of an espresso. For example, a moka pot (stovetop espresso maker) yields espresso with a sharper flavor and thick, velvety crema, while an espresso machine is likely to create a smoother, more full-bodied espresso.