Coffee and Espresso Machines Espresso machines use pressure in order to push water into finely roasted and tamped beans. They make a rich and delicious cup of coffee. Experts from the Good Housekeeping Institute recommend models that brew at the minimum pressure of 9 bars in order to achieve optimal https://www.coffeee.uk/products/amzchef-20-bar-espresso-coffee-machine-with-lcd-panel