Pickle juice can be cloudy from the pickling spices, not using pure salt/pickling canning salt, and sometimes "hard" water can cause problems too.

There may be other reasons that I don't know about. I tried doing a quick keyword search on the subject, no luck, but that just means I probably wasn't using the right keywords.

As long as it tastes like it should, I think it's fine.

Anhata
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