The fact that the nutritional quality of a given food {and of that food's food} can vary not just in degree but in kind throws a big wrench into an industrial food chain, the very premise of which is that beef is beef and salmon salmon. It also throws a new light on the whole question of cost, for it quality matters so much more than quantity, then the price of a food may bear little relation to the value of the nutrients in it. If units of omega-3s and beta-cartene and vitamin E are what an egg shopper is really after, then Joel's $2.20 a dozen pastured eggs actually represents a much better deal than the $0.79 a dozen industrial eggs at the supermarket.
( Michael Pollan )
[ The Omnivore's Dilemma: A ]
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