You didn't specify dill, sweet, bread & butter, etc., but I'll answer for dill pickles, the most popular type of pickle, and probably the one you meant. Besides cucumbers (…the main ingredient) all dill pickles have water, vinegar and salt as primary brine ingredients, as well as some form and combination of dill as a spice. - sprigs of dill (leaves), dill seed (different than the leaves or sprigs, more like a spice than an herb), dill flowers (the head of dill where the seeds eventually come from). In addition, here are some other ingredients that are commonly found in dill pickles: .
Sugar, or high fructose corn syrup (small amount) .
Mustard seed .
Celery seed .
Cayenne pepper .
Bay leaf (MORE)