Gaz is an Iranian nougat that originated in the Isfahan region. It is widely known as Persian Nougat in American and European countries. It is made from pistachio, almond kernels, rose-water, egg whites and sap from Persian manna.

Nougat is a family of confections made with sugar or honey, roasted nuts, whipped egg whites, and sometimes chopped candied fruit. The consistency of nougat is chewy, and it is used in a variety of candy bars and chocolates. The word nougat comes from Occitan pan nogat, seemingly from Latin panis nucatus 'nut bread'.