The juice from the pickle jar is a secret ingredient in many chowhounds’ pantries. Here are some favorite uses:
A little kosher dill pickle juice is great in potato salad. Pickle juice also enhances tuna salad and deviled eggs.
Adding pickle juice to braised short ribs or pot roast gives a nice deep taste to the gravy.
Pickle juice is great for marinating carrot sticks and sliced cucumbers. You can also use it to pickle sliced onions. Leave them in for a few days, then toss them on some burgers.
pdxGK even recommends a recipe for dill pickle soup!