Storage of Pickle Brine (Without Cucumbers) How long can you keep sweet pickle brine without cucumbers in it? Or can you even do this?
I use sweet pickle brine in many of my recipes.
As the brine is the preserving agent (due to the acidity, even in a sweet pickle), not having the cucumber in the jar will not reduce its shelf life.

The brine should easily last six months (and probably much more) in refrigerator.