I don't mean metaphorical food I mean literally thinking about food from around the world. Peter Menzel and his wife, Faith D'Aluisio, traveled the world to find out what people actually eat every week and created a book called The Hungry Planet. They took pictures of each family surrounded by a week's worth of food and those pictures have been making the rounds by e-mail and blog posts like this one.
Here's are two examples,
the Aboubakar family from a refugee camp in Chad who spend under $2 (which is subsidized by relief organizations to cover the other $22 in cost)
the Melander family from Germany who spend just over $500.
Here's links to find out more:
Time Magazine Story- Part I - Part II
Map of 20 of the families