Yes. Coarse salt is mainly seawater, salt wells, salt ponds, salt springs in the brine, through the frying and sunshine into the crystallization, is not after any special treatment of large grains of salt, sea salt can be eaten, but need to be processed and purified, can not be directly eaten, because there are a lot of impurities in it, the sea salt is the coast of the salt flats to take the water through the sun for a long time to evaporate the water vapour to leave the salt crystals made.