The toy industry had its Tickle Me Elmo, the automakers the Prius and technology its iPhone. Now, the food world has its latest have-to-have-it product: the cage-free egg.
The eggs, from chickens raised in large, open barns instead of stacks of small wire cages, have become the latest addition to menus at universities, hotel chains like Omni and cafeterias at companies like Google. The Whole Foods supermarket chain sells nothing else, and even Burger King is getting in on the trend.
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