An idea (OTish)
I have always had is to collect some sea water mid ocean and boil it off to make salt. it can then be called pelagic salt and I can ascribe all sorts of mystical bullshit to it in order to sell it for a fortune in Covent Garden. After all, some idiot does that for rock salt from the Himalayas.
Beer because, I would be able to get lots of it if the idea took off.