I’m obsessed with mine. It’s essentially a mini hotplate in an insulated lunchbox. It gets food to 165 degrees F and holds it there indefinitely.
So I literally get two hot meals a day at work served directly to me at my desk, courtesy of my past self, who meal prepped and then plugged it in. It can also heat up frozen dinners directly in the container, bc it doesn’t get hot enough to burn or melt anything.
No link bc I got it on Amazon and I’m not giving them any free publicity, just search for hot logic lunchbox.
Since the food is in a sealed container, it doesn’t lose much moisture, but if it’s going to sit for a long time, I’ll add a spoonful of water or something to hold moisture in.