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https://yauld-elk-ncq41g.mystr....ikingly.com/blog/thi
Buying an Espresso Coffee Machine Espresso machines heat water to close to boiling, and then force it through tightly packed ground coffee into portafilters under pressure. They can also be used to make milk-based drinks. Most espresso makers include adjustable settings for the size of the drink and strengths. They may also feature proportional-integral-derivative (PID) temperature controls, which monitor and control on-off cycles to keep the boil
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