Rehydrate the patty in the beef bullion, put it on those bricks they called crackers, put the cheese curds (spread) on there, a touch of salt... I can't say enjoy, but at least you weren't trying to gag down that turkey al a crap they had.
I always considered myself lucky if the dried fruit hadn't busted the seal and turned into a dark, grotesque mat of nasty.
I'd throw the PB in my cargo pocket and hit it on a hump. The rocket fuel (instant coffee) was a open-pour in mouth-hit swig from the canteen. My stomach would never tolerate that crap now.