From today's Salon, there is an article on the sandwiches being designed by the military to be edible for up to 3 years.
Just to whet your appetite, a few quotes:
Darsch said his sandwiches are designed to be as resilient as the troops they feed. "This bad boy will last a minimum of three years at 80 degrees, six months at 100 degrees."
Food science takes time, Darsch said -- "I don't even want to tell you how long it took to develop the McNugget."
Peanut butter has so far proven too unstable to last three years in battlefield conditions, said Michelle Richardson, a food technologist who has worked on the sandwich. . . . Richardson says her team is closer than ever, and has found ways of stabilizing the peanut butter -- but not without killing its stick-to-the-roof-of-your-mouth qualities, a sensation she says no soldier under fire should miss.
The barbecue chicken sandwich is another matter: Its sickly sweet sauce overwhelms the chicken, but considering its dark, mystery-meat color and texture, that may be a good thing. It leaves a lasting chemical heaviness, although Darsch emphasizes its natural ingredients.
"There are no chemicals you can't pronounce," he said.