Group Head & Machine Cleaners

Coffee oils build up in the group head and go rancid, and the taste reaches the cup long before anyone thinks to look at the machine. A daily backflush is a two-minute job that removes the commonest cause of a bar quietly serving bitter espresso.

Powders for traditional group heads, tablets for most bean to cup brew units. Check which your machine specifies — using the wrong one is at best ineffective and at worst a warranty problem.