Sa Huynh salt makers use natural sedimentary clay ponds, entirely free from artificial materials like cement or PE tarps. This natural foundation maintains optimal temperatures, allowing the salt to crystallize slowly and develop its rich, deep flavor with a signature sweet aftertaste.

The diverse microorganisms found in the traditional Sa Huynh salt fields—including algae, cyanobacteria, and microalgae like Dunaliella salina—enhance the natural evaporation process of seawater. This creates an ideal environment within the salt fields, preserving a higher concentration of health-beneficial minerals compared to industrial salts available on the market.

The production of salt on natural clay ponds generates no waste. A closed canal system utilizes tidal flows to channel seawater into the fields, while sunlight and wind are harnessed to crystallize the sea salt. This method represents one of the most efficient and environmentally friendly approaches to sea salt production.