What is the process where oil changes to fat?
                                
                                
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                                    4 min read                                
                            
                                The chemical process of hydrogenation, a method first developed in the early 20th century, is the primary industrial process where liquid oil changes to fat. This transformation is essential for creating a variety of food products, from margarine to baked goods, by altering the oil's physical state from liquid to solid or semi-solid.