How Many Calories Are in Restaurant Onion Soup? A Nutritional Guide
                                
                                
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                                    4 min read                                
                            
                                According to nutritional data, a restaurant's French onion soup can range from a modest 200 calories to a hefty 800 or more, depending heavily on its preparation. This guide will help you understand how many calories are in restaurant onion soup and what factors contribute to its final count.