It's called The Omnivore's Dilemma, A Natural History of Four Meals, by Michael Pollan, and it purportedly examines four kinds of meals, in terms of production, origin of ingredients, delivery miles, etc.  The four meals are a McDonald's meal, a Whole Foods meal, a meal from a sustainable farm and a meal foraged from the wild.  

Pollan concludes that if we are what we eat, Americans are CORN. (Chicken McNuggets have 38 ingredients - 38! - and 13 of them are corn.)

Great, another book I want.

Karen in Austin

'tis strange I should be old and neither wise nor valiant. From "The Maid's Tragedy" by Beaumont & Fletcher