Would you have extra to barter with to get (hopefully) things you need that you don't have? This is good to think about.
Many of us know that grocery stores basically have no back room storage… everything they have is on the shelves... and if something happened... when the trucks stop coming in... the food will be GONE.. within three days at the longest. Which leaves you and your family with whatever you have in your pantry. What if this was more than just a few days? What if it was for a few weeks? A month? Years?
Canned meats. (and going hunting a LOT) People will be craving for meat. I was watching a television program, and the wife was canning salmon. I thought that was brilliant. I am planning to get a NICE canner. I want to start canning meats, (chili, spaghetti sauces, soups, etc).
Canned vegetables. I think everyone needs to have a kitchen garden, even if its just a little one in containers. But if you don't, canned veggies is better than nothing.
Pasta. Cheap. Easy to store. Simple to make a meal. If you can heat water, you can eat.
Powdered milk. Most people don’t like the taste. Bake with it to keep it rotated. Unless you have a dairy cow or goats, this will be a treat!
Dried beans. They are packed with protein. Soak those beans overnight, Get out your cast iron dutch oven, and put them on to simmer with whatever you have to add to it.