What are the cheapest meals world wide?

I think Seaweed might be the cheapest, most abundant, and most healthy food substance world wide. I also think Sapiens are moving that way to solve world hunger.
Yes rice and beans are eaten by many cultures worldwide as an inexpensive healthy diet.
Potatoes, eggs, hot dogs, pasta is not so abundant nor healthy as a base diet.

@ForeverFree Second on seaweed and rice. A case of organic sea salt sells on Amazon for $12. Yummy!

Back in the 1970s there was a study we had to read in Economics over cheap but nutritionally complete meals. And it was determined that eating beef hearts was nutritionally sound and also inexpensive.

Cook that with some cruciferous vegetables.

I don’t really know, but a bowl of rice is a really cheap meal and has some nutritional value.

Rice is filling but it has little nutritional value other than calories from carbohydrates.

Foraging wild plants.

Fishing, if you create a spear without paying anything for it.

Dumpster diving is free if you don’t get arrested.

Or negative cost, if you find ways to get paid for eating things.

Anything you can find to eat for free I guess as long as it is edible. Can’t get cheaper than free.

Beans and corn would probably be best for nutrition and cost. Otherwise I’d say rice.