<p>In this Sept. 15, 2011 photo, a new Dave's Hot 'N Juicy Cheeseburger is displayed in the Wendy's research and development laboratory at the company's international headquarters in Dublin, Ohio. (AP Photo/Paul Vernon)</p>
September 23, 2011
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September 23, 2011 9 p.m.
Building a better burger
Wendy's unveils new Dave's Hot 'N Juicy burger on Monday
NEW YORK - When Wendy's decided to remake its 42-year-old hamburger, the chain agonized over every detail. A pickle chemist was consulted. Customers were quizzed on their lettuce knowledge. And executives went on a cross-country burger-eating tour.