Pistachio, also known as Big Tat , green nut and so on. Pistachio is a kind of dried fruit, commonly known as pistachio, also known as "nameless fruit", similar to ginkgo. Packed with vitamins, minerals and antioxidants, pistachios are low in fiber, making them a wise choice for health. Itis mainly produced in Syria, Iraq, Iran, the southwest of the former Soviet Union and southern Europe.