I lived through Katrina. For about 3 months there was virtually no frozen food and very limited fresh food and meat. Limited types of canned and dry food. You went to stores every day to see what food had come in for that day. Then you stood in line for 1 to 2 hours to pay for it. We didn’t go hungry, but sometimes we ate some weird food.
I am sure that was not a fun experience. I asked people to remember what happened after Katrina for a reason. I also ask people to remember that the majority of the population had evacuated.
There will be not be evacuations from our cities so you will have a concentrated population that relies on the government for subsistence.
If any food shortages occur and government services are disrupted there will be riots and looting. Once that happens, most store owners and retail outlets will simply close up shop.
God forbid any of our large cities go “feral” but it certainly could happen based on past history. It will be a good time to live far from metro areas.
Alpo and Kraft macaroni and chees make a great casserole.
So I'm told by an old miner.