Important Parts Of an Espresso Machine A top espresso machine should provide a robust and rich-bodied shot of coffee, with a full-bodied flavor and intense aroma. This requires high temperature and pressure. Pay attention to the crema. This golden-brown layer is what gives rich espressos their distinctive taste and color. https://www.coffeee.uk/products/black-melitta-purista-espresso-machine-series-300