TMG51 said:
My opinion is that most people are too over-cautious of spoiled food.
Sure, food poisoning is a real thing, and no one wants it. But how do you think people survived for thousands of years before the refrigerator was invented? Exercise a little common sense, is all. As HDR said reheat foods with a high liquid content. Heavily salted items (bacon) will keep at room temperature a while. Salting and candying were both early methods of food preservation.
I regularly eat stuff that's been out a day or two or more. The only time I've gotten sick eating something was with dairy. Do pay attention to dairy.
I've had severe food poisoning 3 times and milder forms of it at least half a dozen in less than a year of vandwelling. That is with an ice cooler and practicing common sense, e.g. if it smells/looks bad at all, assume it is, and try to use things up fast, and no dairy whatsoever.
I've learned that without the option of a kill step - that is, heating up the item - I need to go above an beyond to prevent food poisoning. Perhaps it's just my weaknened immune system. I do trust that lots of things don't actually need to be refrigerated. But if you have yet to experience the toxic smelly ooze of mayonaise gone bad you're missing out!
Keep mayo totally clean and it'll keep forever unrefrigerated. Use a dirty knife in it once and it's suspect from then on. Or use the little mayo packets.
minimus.biz is a great place to buy tiny containers of food.
One meal I've been enjoying lately is to purchase a small amount of deli meat (there's no minimum) and then some local fries, combine them with mayo and basically I have ingredients for a baked potato, with fries instead. Add whatever toppings you like on yours.
Another meal I've done before is to purchase a small can of pizza sause and dip deli meat in that and eat it.
Instant oatmeal is another.
I do bread and a butter substittute. If the non-dairy butter gets too hot it will seaparate, and the texture is less desirable, but it doesn't go bad. Then again, back when I could eat dairy we never refrigerated our butter and it never went bad, so YMMV.