This article is from the Food Preserving FAQ, by Eric Decker firstname.lastname@example.org with numerous contributions by others.
Check out the Real New York Pickle recipe for one poster's opinion.
Also tells you what half and full sours are...
Kosher style pickle is commonly taken to mean a salt brine pickle.
A real Kosher pickle is an ordinary brine pickle but it is made under
rabinical supervison and inspection.
Leah H. Leonard in her book, Jewish Cookery, has recipes for pickles
that one will find in any supermarket ... they are so mainstream and
generic we know them as piccalli, pickled peppers, etc.
Strictly speaking Kosher in food is a very specific procedure(s) which
assure food conforms to Jewish Religious Law.