Actually when I thru'd in '97 I ate cold all but one night. It was up in ME, right before Rangely. I hit a hungry spell, only time on the trail. I was going into Rangely but the guy I was hiking with wanted to push on for Stratton before resupplying. He wanted to lighten his load and asked me if I wanted any. Under the circumstances I couldn't say no. That was the only, non town, warm meal for me.
I don't have a sense of taste or smell so that does help to simplify things quit a bit.