Coffee Machine Espresso Espresso coffee is produced by forcing hot water under pressure through grounds. There are many processes that go on behind the scenes to guarantee consistent quality. Temperature and pressure of water are the two main elements. A good espresso machine will allow you to regulate these variables https://coffeeeuk95326.suomiblog.com/why-we-why-we-best-budget-espresso-machine-and-you-should-too-45509358