Hello, I invite everybody to type "heat retentive plates" in Google to learn about a ceramic microwaveable heat retentive plate that you preheat for just one minute, and stays HOT FOR 1/2 HOUR and the rim remains cool for easy handling. Regards. Juan
P.S. IT USES A NEW LOW COST MICROWAVE-ABSORBING COMPOSITION OF MATERIAL ESPECIALLY DEVELOPED FOR THAT PURPOSE.