None, turns out, although it was only one afternoon. I did have a fair amount of smoke dust to wipe off it at the end of the day, which shouldn’t have surprised me but it did.
They say not to microwave it. They say a pot of hot but not boiling water will do it, and for me it’s never done it. Putting it right next to a pot of soup boiling away for hours? Not that either.
But by golly a black lid, direct sunlight, an unseasonably 93F day in September, and that crystalized year-old honey was now as runny as the day the hive was rather sorry to see it go.