Important Parts of an Espresso Machine A good espresso machine should give a rich and strong shot of coffee, with a full-bodied aroma and a strong flavor. This requires a high pressure and temperature. Pay attention to the crema. This golden-brown layer is what gives rich espressos their characteristic taste https://www-coffeee-uk06337.glifeblog.com/29136164/what-is-coffee-machine-espresso-and-why-you-should-care