There are ways to keep food hot or warm but ...once the food is on the plate forget it; it will get cold.
Even if you preheat the plate both plate and food will get cold in about 5 minutes unless you use HotSmart plates. Hotsmart plates store heat and release it slowly to keep the food from getting cold. HotSmart plates actually reach maximum temperature in about 6 or 7 minutes after taking them out of the microwave oven.
The process is very simple: Preheat the plate and serve the hot food as usual; the plates can be handled with the bare hands, click here to see how simple it is.