Celtic Sea Salt/ Sel de Guerande is hand harvested using traditional methods on the Celtic Sea coast of Brittany in France. Celtic sea salt is obtained after the sea water is filtered from one pond to another in a natural network of 20 ponds. It is sun-dried, unwashed, unrefined, unprocessed and with no additives. It is renowned because of its very high bio-available minerals content. This salt is composed of only 71 to 74 % of sodium chloride. This is why it is grey. For nutritional information and ingredients, click Further Information.