I bumped into a heavily pregnant neighbour yesterday in the local deli-cafe (the baby's due on Wednesday). Given the venue, I wondered whether she was experiencing any cravings. Not really, she answered, except for one that had come upon her very recently: she fancied tasting the cloud of volcanic ash from Iceland. She imagined it would have a sulphurous flavour.
The volcano story has been comprehensively - if not exhaustively - covered. But not from this angle as far as I'm aware. Is an expert available to explain?