Gaz is an Iranian nougat that originated in the Isfahan region. It is widely known as Persian Nougat in American and European markets It is made from pistachio, almond kernels, rose water, egg whites and, historically, sap from Persian manna (psyllid manna). Modern gaz often uses sugar and corn syrup as substitues for psyllid manna.
The Persian word gaz is associated with gaz-angobīn which translates to "honey of Gaz", in reference to a species of Tamarisk (T. gallica) that is native to the Zagros Mountains located to the west of Isfahan. Gaz is traditionally presumed to be the sap of the Tamarisk tree.