Parsley that is puréed in a blender or with an immersion blender just before serving is an excellent flavoring for fish sauces or delicate meat sauces, especially for sweetbreads. Its flavor is robust yet subtle and complex. Once puréed, parsley quickly loses its pungent aroma and flavor and so should be used immediately. Parsley purée can be presented in two ways: as a stiff purée to be served alongside fish and meats, or as a thickener, blended directly into a sauce at the last minute.