Important Parts of an Espresso Machine A high-quality espresso machine will give a rich and strong shot of coffee, with a full-bodied flavor and intense aroma. This requires a high level of pressure and temperature. Pay close attention to the crema. This golden-brown layer gives rich espressos their distinctive flavor https://www.coffeee.uk/products/gaggia-ri8423-espresso-machine-freestanding-manual-white