(NEWSER) – Nearly 3,550 calories for a burger, fries, and shake sounds about right—if it's one of the meals called out on a watchdog group's annual list of fatty, sugary, calorie-heavy foods served at US chain restaurants. The Center for Science in the Public Interest pored over nutritional data for food served at more than 200 chain eateries in a quest for "the worst items that we can find," a CSPI registered dietitian tells the Chicago Tribune. This year's "Xtreme Eating Awards" winner? The aforementioned 3,540-calorie meal of a "Monster-sized A1 Peppercorn" burger at Red Robin, served alongside "bottomless steak fries" and a "Monster Salted Caramel Milkshake."

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