What Does It Mean When Milk Is Foamy?
                                
                                
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                                    6 min read                                
                            
                                According to food scientists, the proteins and fats in milk are the primary components responsible for its ability to form foam. This ability to trap air within a liquid matrix is a complex process that explains what it means when milk is foamy, and is influenced by everything from the milk's temperature to its protein-to-fat ratio.