https://notes.io/wNHyG
https://www.openlearning.com/u..../meldgaardbernstein-
Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling. They then push it under pressure to pass through tightly packed ground coffee in portafilters. They also provide steam for drinks made from milk. Most espresso makers come with customizable settings for different sizes of drinks and strengths. They may also feature proportional-integral-derivative (PID) temperature controls, which monitor and control on-off cycle
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