In this Sept. 15, 2011 photo, Liz Shires, Wendy's research and development 

In this Sept. 15, 2011 photo, Liz Shires, Wendy's research and development laboratory coordinator, wraps a finished Dave's Hot 'N Juicy Cheeseburger in the lab at the company's international headquarters in Dublin, Ohio. (AP Photo/Paul Vernon)
Associated Press
In this Sept. 15, 2011 photo, Liz Shires, Wendy's research and development laboratory coordinator, wraps a finished Dave's Hot 'N Juicy Cheeseburger in the lab at the company's international headquarters in Dublin, Ohio. (AP Photo/Paul Vernon)
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