Refrigeration makes food storage easier, but it ain't necessary. It's a convenience. In places like Texas, where we grab our boats and bail each other out, when the hurricane sweeps through, we would shift all crop production to dryable foods like beans and rice. And yes, food would be rationed for a time. We still have horses and cows (for moving supplies until gas and cars were back up). Wild boars are innumerable- that's an invasive foreign source that could be hunted to extinction with NO ill effects. No, not 90%, more like 16%.