How long does milk from a milkman last?
                                
                                
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                                    4 min read                                
                            
                                Historically, pasteurization, a process discovered by Louis Pasteur, was a critical step to make milk safe for consumption and extend its shelf life. Today, the freshness of milk delivered by a milkman depends heavily on this processing method, along with how quickly it's refrigerated and the type of packaging used.