As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURNED TO BOS DUE TO SMOKE IN COCKPIT. *S/D* STRONG SMOKE ODOR AND ELECTRICAL SMELL CAME FROM FORWARD GALLEY AREA. SMOKE COMING FROM INSIDE OVEN. FOUND COOKIE CONTAINER LIDS CHARRED. REPLACED OVEN AND CONTROLLER, GALLEY MODULE OPERATION NORMAL.