Is the Shack burger gluten-free? A Guide to Safe Ordering at Shake Shack
                                
                                
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                                    3 min read                                
                            
                                The standard Shake Shack ShackBurger is not gluten-free because of its potato bun, but it can be modified for a gluten-free diet. However, there are significant cross-contamination risks, especially with fried items and shared surfaces.