I think making them from store-bought dill pickles *is* the "homemade" recipe. It was printed in Southern Living magazine many years ago. If you want to make them from scratch, I'd make the dill pickles first and then follow a recipe that starts with the store-bought ones. If you put the peppers in a water bath, they might infuse the pickles much more than you want and end up *really* hot.
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~ Anthony Bourdain, Parts Unknown, 2018