What most people don't get about professional-level cooking is that it is not all about the best recipe, the most innovative presentation, the most creative marriage of ingredients, flavours and textures; that, presumably, was all arranged long before you sat down to dinner. Line cooking - the real business of preparing the food you eat - is more about consistency, about mindless, unvarying repetition, the same series of tasks performed over and over and over again in exactly the same way.