The bartender’s professional imprint
 
The bartender’s imprint is one of the most considerable quality factors in the preparation of a perfect espresso.
This is why it is important to master the rules which are part of the skill: first of all the everyday cleaning of the whole equipment.

5 golden rules

1. The coffee maker should never be turned off

2. clean the filter installed in the machine’s filter holder every day

3. keep the gauge values always under control (pump: 9 atmospheres; hot-water heater: from 0,8 to 1,4 bar)

4. before fixing every coffee remove the possible powder remainder from the previous coffee from the filter

5. clean the salt remainders every week from the purifier, which has to be changed every two years