Buying an Espresso Coffee Machine Espresso machines heat water to close to 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 come with customizable settings for different sizes of drinks and strengths. https://coffeeeuk53749.dm-blog.com/29890368/the-hidden-secrets-of-coffee-espresso-machine