I wanted to add to this thread today as I've just finished wrapping up my first bochet mead! There's some things that I've discovered, which I think I've seen hinted at on other pages/sources, but I think they bear repeating (read: big safety issues!):
1) when honey boils, the apparent volume increases DRAMATICALLY! 18 lbs of honey is a couple inches in the bottom of my kettle...once boil hit, the level of "liquid" is at *least* 4 to 5 times higher! Bottom line: you need a MUCH bigger kettle than you might think...
2) the boil requires constant attention to fiddle with the heat level, and needs to be stirred almost constantly to prevent even further rises in the boil and subsequent boil over.
3) Boiling honey is damn f*&King hot! And it likes to splash up and out with the bigger bubbles...my ring and pinky fingers will tell you that you would be well served to wear some sort of protective glove, or probably even better, a *really* long spoon.
4) When you add the water at the end of the boiling, DO NOT add it quickly. I mean this...literally add it like an ounce or so at a time. When water hits hot honey, it boils instantly and sprays damn f*&King hot boiling honey everywhere.
5) Do this outside, but be prepared to battle the bees, wasps and other assorted insect fiends...it would help to have a partner just to shoo/swat them away.
All in all though, my brew was very successful, and I'm really excited at how this will turn out. It smells awesome, is a beautiful shade of mahogany brown, and the hydrometer sample tastes like drinking a perfectly roasted marshmallow....