I'd guess the making would involve both rice and some sort of yeast, but I have no idea.

[ She's presuming rice doesn't have a natural yeast of its own, but admittedly, she's also not had all that much rice in any form in her life. ]

Alcohols of any sort are something I believe is under investigation.

[ She has hopes. Also one dream. It may be this hope and dream. ]

Might we be able to use something else as a base for cooking the fish in?