It's not even really salt. It's just dryness.

McDonald's food can be kept from decomposition when laid out flat to be dried out from the ambient low humidity air. But that is true of any other burger or fries of the same size.

And when kept in a moist/humid environment, the McDonald's food will mold and rot, just like any other similar food in that environment.

but not enclosed in epoxy resin! and that, my friends, is the decomposition that counts.

Oh, really?

I've never heard that my people's process of brining & dessicating seafood would allow it to be stored without refrigeration until juuuust now.

I don't use Reddit, silly.