Buying an Espresso Coffee Machine Espresso machines heat water to near boiling. They then push it under pressure to pass through tightly packed ground coffee into portafilters. They also provide steam for drinks made from milk. Most espresso makers come with customizable settings for different sizes of drinks and strengths. https://coffeee88482.getblogs.net/62284643/the-ultimate-glossary-for-terms-related-to-best-ground-coffee-for-espresso-machine