- "An Imperial sap refinery lies dead ahead."
"What does the Empire want with tree sap?"
- ―Saw Gerrera and Cal Kestis
The Imperial Refinery was a refinery on Kashyyyk, in which the Galactic Empire created a powerful compound from tree sap. During the era of the Empire, Saw Gerrera and his Partisans planned to enter the refinery and free enslaved Wookiees. The former Jedi Padawan Cal Kestis, who had visited Kashyyyk in search for the chieftain Tarfful, encountered Gerrera, assisting with the mission.