Fill in the Blanks (Reading & Writing)

Salt production along the coast still relies on shallow pans where seawater is left to —evaporateevaporatedevaporatingevaporation under the sun. Workers rake the crystallising brine by hand, a method largely —unchangedunchangeablechangelesschanging since ancient times. Although industrial extraction is faster, traditional salt commands a premium for its —distinctivedistinguisheddistinguishabledistinction mineral flavour and is often —reservedreservingreservationreserve for gourmet cooking.