As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING CLIMB OUT CABIN REPORTED SMOKE OUT OF OVEN NR 3, AFT GALLEY. IT WAS CLASSIFIED AS STEADY, MODERATE, INSIDE OVEN, NOT INCREASING AND NOT INFLUENCING CABIN PAX AREA. FLIGHT RETURNED TO AIRPORT AND PERFORMED A NORMAL LANDING.