disagree
you can give it a try as moisture sensors are also used for sand/ground
or DIY - tuxgraphics.org: Remote flower watering and monitoring -
another way to measure moisture might be to send light through the honey and check if there are differences
(at least not intrusive will keep the honey pure)
but I'm thinking solutions now, back to the requirements,
- what is the precision?
- accuracy?
- working range?
Can you tell some tech details of the waterlevel in honey.