Coffee Machine Espresso Espresso coffee is produced by forcing hot water under pressure through grounds. There's a lot going under the hood to ensure consistently high-quality coffee. The key components are water temperature and pressure. A good espresso machine allows you to regulate these variables to ensure consistency in flavor https://coffeee-uk05230.wssblogs.com/29883802/a-brief-history-of-the-evolution-of-best-budget-espresso-machine