Edible coatings are soluble formulations applied on food surfaces such a skinny layer of edible film is made directly on the food surface or between different layers of components to prevent the migration of moisture, oxygen, and solute into the food. Coating process. The coating process consists of applying a coating material to a moving web of the flexible substrate. The benefit of the coating is that it delivers to the substrate enhanced aesthetic and physical properties derived from the coating material. Coating within the food industry is that the application of a layer of liquids or solids onto a product. The operation essentially relies on mechanical energy. It consists mostly of setting the merchandise particles in motion and simultaneously applying the coating ingredient during a certain pattern to show one to the opposite.