For many Jews honey is inherently kosher, much like fruits and vegetables.
However, there are groups (particularly the Orthodox Jews) who prefer that
most processed foods have kosher certification, meaning that the processing
of the food has undergone a degree of supervision to ensure that the result
is kosher.  Honey is intrinsically parve, meaning neutral, not part of the
meat or dairy group.  If you use a pot used to prepare food in either of
those two groups to prepare your honey, then the honey will lose its neutral
property.  Worse, if you use a pot or utensils that were used to prepare
non-kosher foods (shellfish, lobster, or pork) your'e hosed.  It also causes
problems if you are not Jewish yourself and use these items to produce
things with grapes (jelly or wine).
  Most people, Jews and otherwise, really have no idea of how honey is
processed and thus they are ignorant of these sorts of problems.  Dead bees
for example, are rather rare and in most cases can be pulled out before
coming into the extractor.  To suggest that the strainer is used mostly to
separate the "dead bee parts" instead of the stray cappings and bits of comb
is flirting with disaster.
  You can be aware of all of these rules, but it still is best if you ask a
rabbi to "supervise" who is willing to produce a certificate that the
resulting product is kosher.  Your best bet is to find a local rabbi and
customer who will do this for a modest fee.  Make him an expert on bees and
honey and it will work out well for you both.  If you contact the major
organizations that supervise food processors for kosher certification, such
as Kosher Overseers of America, or the Conservative Union, they will want
very substantial fees up front and well as in some cases, the signing of a
non-disclosure agreement.  Unless you are moving tons of honey to a very
narrow market it's not worth it (not for me).
  Contrary to popular belief, there is no "blessing" by the rabbi.  They
just have their own peculiar rules for food preparation rooted in the
history of their beliefs.  I'm not Jewish but have made an effort to get to
know more about this since for the Jews honey is a special gift - for me
also.  It is in fact a rare kosher food that is produced by a non-kosher
insect (you can't eat the bees themselves - only their honey).
/C.Crowell