Mostly true, but it's more complicated than that - beans, garlic, and kale are cheap, for example. So is oatmeal. The cheap-but-nutritious ingredients take a bi

Mostly true, but it's more complicated than that - beans, garlic, and kale are cheap, for example. So is oatmeal. The cheap-but-nutritious ingredients take a bit of preparation, though, and generally aren't eaten as a single-ingredient convenience food. Don't get me wrong, though - there's definitely a lot of artificially cheap, nutritionally barren food.