Comment by js2

2 days ago

An NC State professor figured it out in the 1970s[^1]:

> At N.C. State University, Professor John Ambrose, an entomologist and assistant vice provost of undergraduate affairs and director of N.C. State’s First Year College program, performed a series of tests in the 1970s to pinpoint the source of the blue honey. The result: nothing is what it seems. [...]

> Ambrose concluded that some of that aluminum ended up in the flowers’ nectar, was transferred to the hive, then added to the bees’ acidic digestive fluid to make blue honey.

Unfortunately no one believes him and he's no longer around to defend himself:

> This story appeared in the April 2010 issue of Our State. Professor John Ambrose died in January 2015 after a short battle with brain cancer.