What do they add to milk to make it last longer?
                                
                                
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                                    4 min read                                
                            
                                According to the U.S. Dairy industry, standard refrigerated milk does not have preservatives added to it. When considering what do they add to milk to make it last longer, the answer lies primarily in heat-based processing, not chemical additives, with Ultra-High Temperature (UHT) treatment being a key method.