Yeh, meat and vegetables can be expensive. But, for example, a bag of lentils, a bag of brown rice, some tinned tomatoes and spices. That stuff is so cheap, none of it requires refrigeration and it's easy to cook large amounts using a single pot on a plug-in stovetop. Sure, there's a process around it, but almost by definition, if you're poor, then you've got a low hourly rate. Even these days, as a "proper grown up", if someone suggests getting food out, my instinctive reaction is "No, I can't afford that". I think the problem more lies with the sort of idea that was in a front page article a couple of days back (http://news.ycombinator.com/item?id=5279307) the bad stuff is just so tasty - what can make different kinds of people choose to eat super boring lentils and rice over super stimulating delicious fat/salt/sugar?

That still doesn't address the issue that none of those ingredients look like "food" to someone who doesn't already know you can put them all together with some heat, water, and time. Part of what keeps those foods cheap, as well, is that they aren't marketed, they have dull packaging, and they're on the lowest-value shelves in the supermarket where they're practically invisible.

Yeh, so true. It's a good hint you're shopping right if you have to bend down a lot and, hey, free workout. Also I know a huge number of people who well know how to cook, but just don't get round to it. Something, something delayed gratification, future time orientation, blah. Also, why am I reading hacker news and looking at knowyourmeme when I could be cooking dahl and rice?

Note that the article is considering fruits and vegetables, while I would argue that they should be considering staples such as potatoes, beans, and rice. Staples which are cheap, feed a significant portion of the world, and are easy to prepare by cooking in water.