What fast food milkshake has the most calories?
                                
                                
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                                    4 min read                                
                            
                                In 2009, *Men's Health* magazine dubbed Baskin-Robbins' large Chocolate Oreo Shake the "Worst Food in America," with a staggering 2,600 calories. While many high-calorie shakes have come and gone, the race for the most calorific treat continues with new contenders vying for the top spot. Understanding the calorie counts of these dense desserts can help you make more informed choices on your next fast food run.