Fleur de sel is rich in minerals that are useful and necessary for health, which gives it an advantage over refined salt. It is a natural source of iron, zinc, magnesium, iodine, fluorine, sodium, calcium, potassium and copper, as it does not undergo any processing or refining after being collected from the sea.
Fleur de sel is only used to flavor food. It is not used in place of salt during the cooking process, instead it is added before serving, as a garnish, a “finishing salt”, to enhance the flavor of egg dishes, fish, meat, vegetables, chocolate and caramel.