As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR TURNBACK, DECLARED EMERGENCY AFTER DEPARTING FROM DSM, F/A REPORTED AN ACRID ELECTRICAL ODOR WITH NO SMOKE ASSOCIATED. RETURNED TO DSM, ODOR APPEARED TO DISSIPATE. FOUND FORWARD GALLEY COFFEEMAKER INOPERATIVE. R & R COFFEE MAKER IAW AMM.