Use it to have a really relaxing ( and some say re-mineralising) bath!
Just pour a pound or so into the tub & hop in
supposed to be really good for you! I have one on a regular basis - you
can also it in a hot tub or jacuzzi instead of chemicals to keep the water
clean
Alternatively, use it to bake a fish in - put whole fish in dish and
cover with salt and bake in oven - this will build into a crust and seal in all
the flavours