https://click4r.com/posts/g/19....103388/what-to-do-to
How a Coffee Espresso Machine Works Understanding how complex devices function will make them easier to use and appreciate. It can also help you decide which one is best for you. Temperature and pressure of water are two of the most important factors in espresso machines. Water needs to be between 195 and 204 degrees Fahrenheit for optimal flavor extraction. The pressure is vital however if it's too high, the coffee will taste bitter. The ideal pressure for coffee is nine bar. Typ
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