The lowest temperature setting on my wife's crock-pot cooker
happens to result in a temperature of 140 degrees.  I store my
honey in one-gallon glass jars which just fit the crock-pot
with room for a water bath around them.  Liquifies in 3-4 hours.
OK for my own use, but not large-scale.
 
Fred
 
According to krengel lawrence e:
>
> I regularly heat my crystalized honey and notice no change in the
> flavor.  I am though cautious to heat only to about 145 degrees F.  When
> I first did this using a double boiler, it was hard to maintain the
> temperature.  I found the solution at a farm auction.  I bought a old
> thermostatically controlled deep frier.  It does an excellent - and
> inexpensive - job.  Once set, the thermostat warms to 145 and holds it
> until all crystals are gone.  I can do about a half dozen one pound
> bottles at a time...  The water (which I use instead of the oil the frier
> used to use) acts as a buffer just as the double boiler would.
>
> Larry Krengel
> Marengo, IL  USA
>