Items\u2014including gourmet products\u2014are evaluated and rated by participants in a controlled event, which can be coordinated by software locally or at a dedicated website. The casing liner having a plurality of grooves and ridges arranged longitudinally and in an alternating relationship about the exterior surface of the casing liner to increase stress storage upon the casing liner being radially reduced in size and thereby decrease the expansion rate of the casing liner and facilitate installation of the casing liner into the casing. Also, the core shell may include at least a receptor, andor the like, to ensure that a target analyte can be bound for measurement with SERS. The process is of use for fixing undesirable compounds or for purifying acidic compounds.