Rice and beans are classic examples - any others?

Pasta has the most longevity. Personally I stock rice though because it's super cheap and I use it in my regular cooking. I like my prepping to be a part of my regular cooking rotation so I don't have to throw food away.

Never underestimate the humble rolled oat. Get some bulk brownsugar and bulk rolled oats and you are set for bfast for YEARS.

Personally though I think the ultimate survival food is frozen meat and having either an off grid solar system or a backup solar system that can run a deep freezer. Meat is always the first thing that goes when there's instability. You need strength and nutritionally dense food in a collapse and meat (especially organ meat) is the king in those departments. You should also live near an area where you can hunt wild game to supplement your stored meat and fill up the fridge when your reserves go bad.

Also don't forget a vacuum sealer. Vacuum sealers turn a 4-6 month frozen meat item into a 14-18 month frozen meat item with better nutrient and flavor retention. They really are magical. Meat also has good potential trading value.

One more simple tip: you should always keep potatoes and onion in the kitchen don't eat them when the shit hits the fan. They can be stored, allowed to sprout, and then planted at the right time if there's a long term food shortage.

I'm also a big fan of fermented foods. They keep a long time without power and are incredibly versatile and rich in nutrients. (Cabbage and other cruciferious veggies also lower estrogen in the male body). If anyone is interested in learning how to make apple cider, wine and vinegar let me know and I can make a post!

*doesn't hurt to learn how to make a solar oven either. Free emergency cooking source!