As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED A SMALL PIECE OF TAPE WAS STUCK IN THE OVEN AT DOOR 4 OVEN BELOW UNIT 3-57, AND HALON BOTTLE AT 4L WAS USED, BECAUSE OF A SMALL FIRE DID ERUPT. MAINTENANCE CONFIRMED SOURCE OF SMOKE WAS CATERING TAG/TAPE. REMOVED AND REPLACED OVEN, OVEN CONTROLLER, AND HALON FIRE BOTTLE. OPERATIONAL CHECKED GOOD, AND AIRCRAFT WAS RETURNED TO SERVICE.