The commercialized taste sensor, i.e., the taste sensing system (Fig. 1) consists of a working electrode with a lipid/polymer membrane used to receive taste substances, a handle, and a data processing unit. In the electrode structure, a Ag/AgCl electrode, inner solution (3.3 M KCl saturated AgCl) is contained in a polyvinyl chloride hollow rod with a lipid/polymer membrane attached (Fig. 3).