Pretty sure you need more than seawater.
Pretty sure any sort of fermentable crop would have trouble growing on seawater.

Pretty sure I wouldn't want to be drinking anything fermented from human waste.

So yeah. Vineyard.
( Kroney, Tue 2 Jul 2013, 15:44, 1 reply, 12 years ago)

You can make some booze with seaweed.

(PsychoChomp, Tue 2 Jul 2013, 15:46, Reply)

This one is quite nice, but needs more than seaweed
www.williamsbrosbrew.com/beerboard/bottles/kelpie
( tangledupinblue hairy badge with moving eyes, Tue 2 Jul 2013, 15:48, Reply)

fuck that

( Naked Ape call me Caitlyn, Tue 2 Jul 2013, 15:52, Reply)

A lot of ales have a bit of Irish Moss in them, that's a type of seaweed.
it's either that or Isenglass which is made from fish bladders used for clearing beers.
(PsychoChomp, Tue 2 Jul 2013, 15:58, Reply)

The vegan ones use carrageenan, also derived from seaweed.

( tangledupinblue hairy badge with moving eyes, Tue 2 Jul 2013, 16:01, Reply)