Buying an Espresso Coffee Machine Espresso machines heat water until close to boiling, and then force it through tightly packed ground coffee into portafilter baskets under high pressure. They can also be used to create milk-based drinks. The majority of espresso makers have programmable settings for drink sizes and strengths. https://coffeee-uk01146.blog2freedom.com/29853330/10-things-we-love-about-best-ground-coffee-for-espresso-machine