How many calories are in 1 mint humbug? Unwrapping the nutritional facts
                                
                                
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                                    5 min read                                
                            
                                According to nutritional data from several UK supermarkets, a single, average-sized mint humbug contains between 30 and 35 calories. These small, boiled sweets with a chewy toffee centre are a popular treat, but their high sugar content means they offer little nutritional value beyond a quick energy burst.