Almost every jar of pickles claims a serving of pickles has zero calories. Now clearly, this is incorrect and the result of exploiting some ridiculous FDA loophole, since anyone knows that cucumbers provide calories.
So let’s say you’re in a situation where you lose all access to food, but you’ve got effectively unlimited access to pickles – like, you’re trapped inside a recently abandoned pickle warehouse.
Could you conceivably eat enough pickles to survive for a month? Two months? Or would your body just shut down from all the sodium and acid?
The pickle juice would dehydrate you and if the pickles or juice were consumed in any significant amount, would likely reduce your survival time … potentially by quite a bit.
But also, you’re in a location with an unlimited amount of pickles (in theory), so even if you don’t directly have fresh water, there’s a chance you could rig up some way of distilling / evaporating the pickle juice to extract fresh water from it. In that case, duration of survivability would increase quite a bit depending on how much fresh water you could successfully extract from the brine. First priority would be to drink only fresh water and not consume the pickles (or consume only a small amount). But if you have lots of left over water, then you can start soaking/boiling the pickles to reduce sodium levels.