I go through a lot of pickles. It’s rare for a gallon jar of dill spears to last much over a month and I eat a quart jar of bread-&-butter chips every couple of weeks. As a result, I have a lot of brine that I hate to throw away. To avoid the waste, I’ve been experimenting with ways to use it. Some of my notable experiments:
Either brine makes a pretty good salad dressing or homemade mayonnaise. Dill mayo in particular is fantastic on grilled salmon.
Roasted, peeled and sliced beets and/or sliced red onion (either together in the same jar or in separate jars) are great in b&b brine. Put the pickled onions on a good grilled hot dog and you’ll never go make to pickle relish again.
Boiled, peeled eggs are pretty good in dill brine but they take weeks to reach full flavor.
Lightly roasted cauliflower has essentially no flavor so it takes up the brine quite nicely.
Pickle brine is one of the ingredients in my coleslaw dressing (no sugar, just pickle brine, mayo, fresh lemon juice, and freshly ground pepper). Shred any veggies you want, use this dressing, thank me later (I hate sweet coleslaw).
It’s also my “secret” ingredient in what my friends swear are the best deviled eggs they’ve ever had.
Hey, Kolga, it’s my secret ingredient too! And for potato salad. But I only need a few tablespoons every few weeks, so I don’t think that would help the OP.
To a point you can but reused brine is going to make a much less flavorful pickle. It will take weeks for your veggies to take in the brine and they will be releasing their own moisture in the process thus diluting the brine. It can work but generally the results are pretty poor and the diluted brine can allow spoilage.
Oh, I should also mention: I also keep a jar of chopped pickled onion in the fridge. It’s convenient for when I just want some onion on a quick hot dog or the like, but raw chopped onion wouldn’t keep. Every so often, I top it off with an onion or half (when I use a half-onion for something else). At first, it diluted the onion flavor too much, but I just keep the same brine and continually add more onion, so it seems to have saturated by now.