What is the keyhole sign food? Understanding the Nordic Label and a Baking Defect
                                
                                
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                                    3 min read                                
                            
                                Globally, consumer surveys in Nordic countries indicate that between 88% and 98% of shoppers recognize the Keyhole symbol, a significant food label. The phrase "keyhole sign food" most commonly refers to this prominent Nordic health label, but it can also describe a specific, less-known baking defect in bread production.