Nutritional values: (per 100g): Chloride: 56g, Sodium: 35g, Sulphate: 1.6g, Iron: 0.8g, Zinc: 0.6g, Magnesium: 0.5g, Calcium: 0.3g, Potassium: 0.2g. About this product Celtic sea salt, also known as Breton grey salt, or sel gris is a natural sea salt from the coastal waters of Brittany, a region in western France.
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