FILE - This undated image provided by Taco Bell shows an advertisement for Doritos Locos Tacos shells. Taco Bell has put the spice back in its U.S. sales after a nearly yearlong slump stemming from a short-lived lawsuit that created a stir. The Mexican-style chain saw its revenue at U.S. restaurants open at least a year rise 6 percent in the first quarter. And its parent company, Yum Brands Inc., is predicting more robust sales in the second quarter. Yum Chief Financial Officer Rick Carucci on Thursday, April 19, 2012 predicted sales growth in the high single digits or low double digits. He said the chain is rebounding thanks to a successful launch of its tacos that use shells made out of Nacho Cheese Doritos. The chain suffered a sales slump in the months after a now-dropped lawsuit last year questioned the beef content of its tacos and burrito filling. (AP Photo/Taco Bell) Photo: Anonymous, Associated Press / AP2012
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