If you are new to Pentaho, you may sometimes see or hear Pentaho Data Integration referred to as "Kettle." Pentaho Data Integration began as an open source project called "Kettle." The term, K.E.T.T.L.E, is a recursive term that stands for Kettle Extraction Transformation Transport Load Environment. When Pentaho acquired Kettle, the name was changed to Pentaho Data Integration. Other PDI components such as Spoon, Pan, and Kitchen, have names that were originally meant to support the "culinary" metaphor of ETL offerings.