New Orleans restaurant matriarch Ella Brennan, 91, is the latest star of a food-centric documentary. (AP Photo/Gerald Herbert)

New Orleans restaurant matriarch Ella Brennan, 91, is the latest star of a food-centric documentary. (AP Photo/Gerald Herbert)

"For years, the first step for chefs who became famous, and those who wanted to become better known, was to write a cookbook. Then, they got on TV -- either as a guest or by landing their own show."

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