As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DEPARTING, DURING CLIMB, SMOKE/HAZE WAS OBSERVED EMINATING FROM THE AFT CABIN AREA. THE AIRCRAFT DECLARED AN EMERGENCY AND RETURNED TO POINT OF DEPARTURE, LANDING WITH NO FURTHER INCIDENT. THE SOURCE OF THE SMOKE WAS DETERMINED TO BE THE CONTENTS OF A GALLEY OVEN. THE AFT SLIDES WERE DEPLOYED AND ENGINE FIRE BOTTLES WERE DISCHARGED.