Fleur de sel is a rare, unrefined salt that is made by evaporating seawater slowly in 2-centimeter-deep ponds.
It's made in western France using centuries-old methods.
Just locally, it can cost 230 times more than table salt.
But for salt producers in the area to make a profit, winds need to constantly blow in their favor — literally.
So, what are the right conditions for fleur de sel to form?
Persons:
Fleur, It's
Locations:
France