Buying an Espresso Coffee Machine Espresso machines heat water to near boiling and then force it through tightly-packed ground coffee into portafilter baskets under high pressure. They also provide steam for milk-based drinks. The majority of espresso machines are programmable settings to adjust the strength and size of the beverage. https://coffeeeuk57346.ja-blog.com/29854408/the-unspoken-secrets-of-coffee-espresso-machine