Is it safe to eat mango with black strings inside?
                                
                                
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                                    5 min read                                
                            
                                According to the Centre for Food Safety, the dark, stringy lines found in some mangoes are known as resin canal discolouration (RCD) and are considered a natural phenomenon. This information is key to understanding if it is safe to eat mango with black strings inside or if the fruit has spoiled.