This recipe had me at Reduction Sauce. Anytime a sauce is simmered and reduced, it becomes even more intensely flavored. By its very definition, Reduction is a process of thickening and intensifying the flavor of a liquid. This concentration of flavors is achieved through evaporation. I know, it sounds like a lot of scientific stuff, but what it all comes down to is flavor. Reduction sauces are bursting with flavor.