Buying an Espresso Coffee Machine Espresso machines heat water until near-boiling and then force it through tightly-packed ground coffee in portafilter baskets under pressure. They also provide steam for drinks made from milk. Most espresso makers include programmable settings for drink sizes and strengths. They may also feature proportional-integral-derivative (PID) https://coffeee25723.diowebhost.com/84928336/10-places-to-find-coffee-espresso-machine