Can Water Be a Substitute for Milk? A Comprehensive Nutritional and Culinary Guide
                                
                                
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                                    4 min read                                
                            
                                According to the USDA, milk is composed of approximately 90% water, but this simple fact hides the complex truth that water cannot be a direct, nutritional substitute for milk. While both provide hydration, milk contains fats, proteins, vitamins, and minerals that plain water lacks, meaning the outcome will vary significantly depending on the context. This guide explores the nutritional and functional differences to help you understand when a substitution is viable and when it's best to find an alternative.