Important Parts of an Espresso Machine A high-quality espresso machine will give a rich and strong shot of coffee with a full-bodied aroma and a strong flavor. This requires high levels of temperature and pressure. Pay pay attention to the crema. This golden-brown layer gives rich espressos their characteristic taste https://www.coffeee.uk/products/swan-retro-pump-espresso-coffee-machine-blue-milk-frother