MASTIC: a very fiery brandy, distilled in various parts of Greece and several Oriental countries from the fermented residue of grapes or currants after the juice has been expressed for wine, the astringent flavor due to the crushing of the seeds, skins, etc., being enhanced by the addition of gum mastic, a product of the Mastic tree, a member of the pistachio family. The Peruvian Mastic is the "Pepper Tree" of California, so named for the peppery flavor of its berries.