So this is "what to eat after an apocalypse that is not the one we're actually facing". I would be far more interested in knowing how we deal with a "soft apocalypse" of fossil fuel depletion, drinking water scarcity, high ocean acidity, etc.
[1] http://www.window.state.tx.us/specialrpt/water/gamechangers/... gives $489 per acre-foot.
First of course, we'll rapidly turn to a conservation economy where energy(and critical commodities) are used only for necessities , probably under some kind of martial law. And of course we have some huge reserves for a case like that.
But , we have such a huge redundancy in food. If we go to the basics, people can live on a big bowl of rice/wheat a day. That comes down 100-200g per person per day. that's tiny.
We also have some amount of fuel diversity - some vehicles models can run on pure ethanol, some can easily converted to natural gas(LNG), and we already have 40K LNG based trucks in the u.s. .
Also there is at least one plant that can make fertilizer from LNG, and others can be built.
As for drugs, which are usually made using precursors from oil derivatives, there are new methods to make those precursors from other means. And some drugs are'nt manufactured locally , but it's possible to import using fuel reserves,or by converting ships to lng.
And since it's under martial law, i assume we will work on rapidly converting our economy to LNG, so as to not be dependent on reserves and increase the living standards .
Still, that shows how little is required to keep people from immediate and then longer term starvation. Grains are very concentrated.
You could pretty much live off muesli after the apocalypse. (Until it runs out, anyway.)
As our "leaders" are blind or don't want to see what's coming, I don't have anythin better than this advice.
Unless I missed the point, and there's some reason I can't fathom why people with children would have a hard time agreeing with a reserve of foods and medicine.
I mean yes, it's a rather sad perspective but nobody came with a solution to change the world yet.
Of course if we could all agree to shoot politicians, journalists and bankers on sight ... ;-)
It is my opinion that western civilization need a collapse before it can reinvent itself better (I hope). The power structures are so well entrenched that nothing short of said collapse can dislodge them (or let us do without them like they don't exist).