Microwave for 5 minutes (or longer depending on how powerful your microwave is). Be careful when opening the microwave door as this does produce some steam.
Remove the measuring cup and turn plate.
Using a soft microfiber cloth wipe down the interior. The steam really helps to break apart any stuck on food and wiping out the microwave should be very easy. For very stubborn and stuck on messes I like to carefully dip the microfiber cloth into the hot lemon water and scrub it with that.
Once you have cleaned the interior, wash the glass turn plate in hot soapy water. Dry with a towel and put back in the microwave. Now everything is nice, clean and ready to go.
This method really works so well and leaves a clean, fresh lemon scent behind. I love that it is all natural and completely food safe. If you have extra lemon peels from cooking you can also use those instead of a new lemon.