A structured method for finding the underlying reason a food safety problem occurred, not just its symptom.
It is a structured method for finding the underlying reason a problem occurred, so the real cause can be fixed rather than just the visible symptom.
Because it stops the same non-conformance recurring by addressing what truly caused it, such as equipment, training or procedure failures.
Corrective action deals with the immediate problem and affected food. Root cause analysis digs deeper to find and eliminate the underlying cause.
Repeatedly asking why a problem happened, following each answer with another why, until the fundamental cause is reached.
Especially when a problem recurs or a non-conformance is serious, so that a permanent fix replaces repeated short term responses.