The sales of sea salt are said to have surged at many supermarket chains this month. Salt sales reportedly increased 55.6 percent while sun-dried salt sales rose 118.5 percent on-year at Emart June 1-14. Salt sales at Lotte Mart rose 30 percent over the same span from a year earlier. Sun-dried salt sales at an online shopping mall increased sixfold on-year June 1-14. Some shoppers joined wholesalers in stockpiling sa...