Uneven sizing of products can also cause cloudiness. For example, small tender peas will cook to pieces during heat processing, while more mature peas in the same can will keep their shape. The liquid will be somewhat cloudy under these circumstances. In home-canned foods, hard water or salt containing impurities or additives, may cause cloudiness. In fruits, over-ripe fruit may make the syrup cloudy.
Fermentation causes the liquid on brined dill pickles to become cloudy.
In all of these examples, the cloudiness is normal and not harmful. If you have further questions, please contact your county office of the NDSU Extension Service.