Do Mars Bars Contain Eggs? An Allergen-Focused Ingredient Analysis
                                
                                
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                                    4 min read                                
                            
                                According to official ingredient lists, many standard Mars bars do contain egg white powder, particularly in the nougat centre. This essential ingredient is used to create the light, fluffy texture of the nougat layer, but is a critical detail for those with egg allergies or following specific dietary restrictions.