Buying an Espresso Coffee Machine Espresso machines heat water to near-boiling and then force it through tightly-packed ground coffee in portafilter baskets under high pressure. They also provide steam for milk-based drinks. Most espresso makers come with programmable settings for drink sizes and strengths. They may also feature proportional-integral-derivative (PID) https://coffeee38766.blogadvize.com/36638085/ten-coffee-espresso-machine-that-will-improve-your-life