I started a new batch of mead yesterday, and I opted to use the propane burner on the BBQ grill outside rather than the stove top inside, since I didn't want to heat up the whole house in the process.
I heat the 15lbs of honey and 1 gallon of water mixture to 165+ degrees for 10 minutes to pasteurize anything that might cause problems later on and give the yeast a pristine environment with no bacterial or foreign yeast competition.
So, I get the water up to 165+, and start adding honey, 3lbs at a time. I swish around some hot water/honey mixture inside each 3lb can to make sure I get as much honey as possible from each container. Temp of the water drops from 165+ to about 140 after adding 15lbs of 90 degree honey, so I stir and allow the temp to rebuild. I get the cauldron up to 165-170 degrees for about 5 minutes.
All of a sudden... bees! Holy bees, batman!
They get very curious when they smell honey being heated up outdoors. They also seemed territorial of it, chasing me away from my own honey.
Fortunately I was pretty much done by the time they swarmed in. I covered the must and let it pasteurize for the remaining 5 minutes, then came back out and grabbed my 2 gallons of honey/water mixture and took it inside to add to 3 gallons of cold refrigerated water, netting the combined temp to about 95 degrees.