In Vietnam, the Central Coast and Southern College salt water drying method. People often digging ponds or shallow lakes as the "right" [2] then informed the sea water filled, then closed. There are places in Vietnam such as the Ninh Hoa, Hon Khoi, the advantage of the tide up or down to the water to be true. [3] Đùng side, the two-level terrace, about 15 cm lower. Every pitch are flattened, square cellular embankment; each cell is 4 mx 10 m. It is salt.
When the salt water from stand up slapped on the full pitch. Field on a "field under" refers to increasing the concentration of salt water. Wait about five sunny days, remove saltwater to flow down the lower courts, called "eat rice" where the salt began to crystallize. Whenever the field under water near land because the water evaporates, the added water from farm fields to bear on food below. Every consecutive motto every day until about a thangtuy chips under atmospheric humidity, the water will run out and play a granular salt. Whereby people salt salt gotten up, the Vietnamese called "scraping salt" hit the mound for the contact to be sold dried.
The yield of traditional salt or salt on the way each cell can produce 500 kg of salt / straight
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