https://english-huff.federated....journals.com/why-is-
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 can also be used to make milk-based drinks. The majority of espresso makers have 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 cycles to keep the boiler at an optim
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