This is my DP's food warmer (perhaps not exact same model). But tealights under a grill to keep food hot.
Last night he cooked a haddock lasagne, served it on the food warmer, and commented that the food wasn't hot by the end of the meal (quick eaters, probably about 15 minutes in).
I am not really too fussed myself, but am interested in solving the problem from a technical point of view.
Improving the food warmers performance or adding something that works.
The plates were warmed and too hot to comfortably hold before dinner.
The room was cold but not freezing.
The lasagne was definitely very very hot when it hit the table.
My thoughts are (1) more tealights? (2) insulated/covered dishes?