Coffee Machine Espresso Espresso coffee is produced by forcing hot water under pressure into the grounds. There are many activities that go on behind the scenes to ensure consistent quality. The key factors are temperature of the water and pressure. You can control these variables by using a reliable espresso https://wwwcoffeeeuk36618.prublogger.com/29297464/you-can-explain-best-home-espresso-machine-to-your-mom