The Hand of Success

The best barista is known for his quality coffee and his consideration of the following factors which may not always be visible but are vital for great espresso never the less...

Store coffee in a cool dry place. To ensure a rich, fresh tasting experience, buy whole beans frequently and only grind as much as you need for each cup. We recommend transferring your whole beans to an airtight container and storing in a cool, dry, dark location to protect the flavor and aroma. Do not freeze or refrigerate your beans.
Rotate coffee stocks regularly.
Check the grinder doses regularly and adjust if it falls below 7 grams.
Check the grinding burrs every 500kg of beans, replace if needed.
Remember that coffee is hydroscopic and ground coffee will change its properties if it is damp or wet rather than if it's dry or sunny.
Check that the coffee machine is working correctly using the gauges.
Check the pump pressure and water temperature levels.
Clean the group head filter housing, the group handles and the steam wands daily. Back flush the group heads daily using group head cleaning powder.
Monitor water filters and replace or re-energize on the due dates.
Keep the machine casing clean and tidy.
Make sure all the coffee cups are always warm and dry.