Checking your brewing recipe throughout the day is very important. Coffee reacts with the environment and will therefore grind slightly different throughout the day. For example, leaving your beans in the hopper all day will most likely mean they will grind coarser later on in the day.
If you do not check the extraction throughout the day then you may find the flavour being slightly inconsistent and we all know that delivering a consistent delicious coffee is very important to everybody.
Baristas should therefore perform a so called espresso extraction check. This can be done at various points throughout the day. Keeping a log can really help and is quite important. We have made an example sheet for you.