The pressing of the ground coffee in the filter holder is a very
important step and with the adjustment of the grinding you will be able to obtain a 25 ml espresso in 25 seconds. The pressing forms a panel of coffee that opposes with the correct resistance to the passage of hot water, 88-90 ° C, driven by a pump at about 9 bar. A good pressing avoids that water can find others ways in the percolation phase that will not allow to use the full dose of coffee. The pressure exerted by the tamper varies between 18 bars and 25 bars. There are manual, manual tampers dynamometric and automatic dynamometric tampers. Manual and automatic dynamometers will allow us to have a constant pressure always with the same pressure, which can be adjusted. When you use a espresso machine and a dynamometric tamper you will be able to have only variable to adjust the grinding
GOOD EMOTION !!!!
