Veggie burgers are making a comeback after decades in the shadows. They were once considered to be a sad alternative to their cow-based counterpart. Vinita Nair reports on how the veggie burger has been re-imagined by award-winning chefs and Silicon Valley.
From: http://redirect.viglink.com?u=http%3A%2F%2Fwww.cbsnews.com%2Fvideos%2Fnew-and-improved-veggie-burgers-make-a-comeback%2F&key=ddaed8f51db7bb1330a6f6de768a69b8
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