Can I prevent honey from congealing/hardening in the pantry? This question is inspired by this answer suggesting that honey lasts a long time.  Unfortunately, it doesn't seem to last so long in my cupboard.  I make sure it's sealed tight, but usually after only a week or two it's looking pretty nasty.

Is there a way to prevent this from happening?  Or is there a standard (not to mention safe) way to "rescue" hardened honey without losing flavour or texture?
Keep it stored in an airtight container, so that it doesn't absorb moisture from the air.

If it congeals, put the container in hot water until honey is liquid (~10-15 minutes).