The French perfected the art of high quality, hand-harvested sea salt by using centuries old sea salt by using centuries old Celtic methods. It’s no coincidence they produce the finest grey sea salt in the world. Sea Gris is known for its color, minerals, and high moisture content. Sel Gris gets its beautiful grey color from the clay lining the salt ponds. The mineral content is extraordinary, with bonus nutrients not found in most sea salts.