Gaz

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. Typically gaz is accompanied by tea or sherbet and is eaten as a dessert after a main course. It is also traditionally served on festive occasions such as Nowruz, the Persian New Year. 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 mountain range located to the west of Isfahan. Gaz is traditionally presumed to be the sap of the Tamarisk tree.

Source: Wikipedia