Imitation and Substitute Cheeses have the Processed Cheese, rubbery-like texture with a mild or bland flavor due to the ingredients. The cheese has reduced-fat or no milk products included in the ingredients as well as vegetable oils substituted for butterfat. A soy-based or milk-based casein, which is a protein solid, is often used to replace the cheese curd required for processing the product into cheese. While Imitation Cheeses cannot always equal the nutritional value of natural or processed cheeses, Substitute Cheeses typically can equal others in nutrients.