The bees apparently ate waste from M&Ms.
Beekeepers in northeastern France have been alarmed to find their bees producing honey in unnatural shades of green and blue.
The beekeepers believe the source of the problem is a biogas plant close to Ribeauville in Alsace.
It is thought the bees have been eating the sugary waste from M&Ms, small chocolates in brightly-coloured shells.
The plant operator said it regretted the situation and had put in place a procedure to stop it happening again.
[...]
The company, which deals with waste from a Mars chocolate factory, said it would clean out the containers, store all incoming waste in airtight containers and process it promptly, according to a company statement published in Le Monde newspaper.
A spokeswoman for the British Beekeepers’ Association, Gill Maclean, said it was possible that the coloured sugar could have contaminated the honey.
[...]
“Bees are clever enough to know where the best sources of sugar are, if there are no others available,” she said.
As for the blue honey, the beekeepers say it is unsellable.
Unsellable? Bah; just a matter of marketing, surely. ‘Limited edition organic blue honey’, or something; trendy people will lap it up…