flavor saver
n.— «Of all Piazza’s assets, the one most easily shared by other cool guys is that close-cropped triangle of chin hair known as a soul patch, or flavor saver or cookie duster.» —“Little Bit O’ Soul The Soul Patch—Barely There Facial Hair—Grows Popular” by Jean Patteson Orlando Sentinel Apr. 30, 1999. (source: Double-Tongued Dictionary)