Lots of salt. Yeast. Lard.
Beef jerky. Dried fruits & veggies. That drier was the best investment I’ve made. That & the bread maker.
Dried fruit and veggies loose a lot of their nutrients, that’s why I advocate run or brandy fruitcake for longterm storage.
How do you store yeast without refrigeration?
I should have mentioned lard. Keeps forever. I think djf did have salt on his list.
Meat storage is tricky. Oldtimers used to can much of their meat for use in stews. Jerky is great, as you point out, but expensive unless you dry it yourself. I think a lot of people who don’t normally hunt will be out tomorrow.
Honestly? A pair of breeding rabbits would be awesome if push came to shove.