Vanilla is a product of Lussumo:
Documentation and Support.
Where is the military, UN Aid workers etc.My brain may be mixing things up with another piece of post-apocalyptic fiction, but I dimly recall a mention of the military going all bandit-y in a particularly nasty way after the Big Splash. And (just theorizing here) the immediate aftermath of the event probably also saw a lot of short nasty wars break out, and any sort of aid organisations would've been quickly overwhelmed.
EDITED BY ARIANA BECAUSE NO FICTION MEANS NO FICTION, NOT EVEN YOUR MATE'S UNPUBLISHED BOOK, THANKS.