I recently discovered Progresso's no sodium broth in 2 serving boxes. It tastes quite rich and I don't miss the salt, but have recently had to pour out half of 2 boxes.
I used to use Swanson's low sodium broth which came in a one serving can, so no left overs. After opening the box and placing in the frig, it seems like the no sodium broth starts to sour after less than a week. Would that be a function of it having no sodium? Being boxed?