How a Coffee Espresso Machine Works Understanding how complex devices operate will make them easier to use and appreciate. You can also choose which device is the best one for you. Two key espresso machine factors are pressure and temperature of the water. Water needs to be between 195 and https://wwwcoffeeeuk73731.blogdomago.com/29138541/the-people-who-are-closest-to-coffee-espresso-machine-have-big-secrets-to-share