Origin and Production of Mastic GumMastic gum is a natural resin obtained from the mastic tree (Pistacia lentiscus), an evergreen shrub native to the Greek island of Chios in the Aegean Sea. The mastic tree has been cultivated on Chios for its resin production for over 2,000 years, with over 100,000 trees currently growing on the island. To harvest mastic gum, shallow cuts are made on the...