On the one hand, espresso beans are often roasted darker than beans for filter coffee. On the other hand, they also differ in the preparation method with regard to the brewing pressure and the extraction time. While the espresso is extracted from an espresso machine, such as a portafilter machine, at 6 to 9 bars in 25 to 30 seconds, the early time for filter coffee is 2 to 6 minutes. In addition, the extraction of an espresso shot creates a crema, whereas with filter coffee the coffee is usually clear.