As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER PUSHBACK, FLIGHT ATTENDANT REPORTED FIRE IN AFT GALLEY. ONE HALON BOTTLE WAS DISCHARGED. AIRCRAFT RETURNED TO GATE. FIRE WAS CAUSED BY PAPER/TRASH BEHIND THE OVENS AND COFFEEMAKER. AFTER CLEANUP, GALLEY EQUIPMENT WAS CHECKED FOR PROPER OPERATION. CHECKED OK.