Unplug the microwave
Remove the turntable and roller ring
Wash the turntable and roller ring with warm soapy water
Wipe the interior with a damp cloth
Mix equal parts water and white vinegar in a microwave-safe bowl
Heat the bowl for 3 to 5 minutes
Let the steam sit for a few minutes
Carefully remove the bowl
Wipe away loosened grime with a soft cloth
Clean the ceiling, walls, door, and door seal
Use a mild dish soap solution for stubborn spots
Wipe the control panel with a damp cloth
Dry all surfaces with a clean towel
Reassemble the turntable and roller ring
Leave the door open for a few minutes to air dry