When did people start eating "salt" in human history?

The cultural relics unearthed in Fujian in 1950s, including salt frying utensils, prove that ancient people in China learned to cook sea salt in Yangshao period (5000-3000 BC). The ancestors of the Chinese nation discovered salt a long time ago. According to legend, during the period of Emperor Yan, Su Sha, who lived in Shandong Peninsula, invented the method of making salt from seawater. In the pre-Qin period, the State of Qi boiled the sea to get salt, which made the country rich and strong.

In ancient China, salt was boiled in sea water. China is the first country to eat and artificially produce salt. The original meaning of the word salt is "boiling brine in a vessel". According to the above information and physical evidence, in China, the origin of salt was as far back as 5,000 years ago in the Yanhuang period. Su Sha, the inventor, was the originator of making salt from seawater and roasting by fire. Later generations respectfully called him "Salt Sect".

Extended data:

The history of human edible salt is almost as old as human history. People use various methods to obtain salt: as early as the Iron Age, the British began to put seawater in clay pots, heat it on a fire, and extract salt from it by evaporation. The Romans began to produce salt by boiling seawater in large pots lined with lead.

People in China use the sun to make salt. Take local materials at the seaside, spread sand on the ground and sprinkle Shanghai water. After the sun evaporates the seawater, the salt adheres to the sand, and then the sand is collected and watered with seawater to become concentrated brine. Finally, the pot is filled with salt water and boiled into salt. Oracle Bone Inscriptions's halogen characters are hieroglyphics obtained by overlooking artificial salt fields from high altitude.

References:

Baidu encyclopedia-salt