While traversing the Great Divide along with the Zhangs and the Gan Jins, Aang discovered both tribes had smuggled food in defiance of the canyon guide's warnings against it. He noticed that the Zhang tribe had brought at least one egg custard tart along to be eaten at their disposal. Aang's outrage at this discovery dissipated upon the glimpse of the tart, and he was instantly reminded of how hungry he was. After successfully escaping the canyon, he asked where that custard tart was, as he was "starving".
The egg tart is a Chinese confection. It is an adaptation of European tarts; its rounded crust is filled with egg custard and baked.
- Avatar Extras for "The Great Divide" stated that the egg custard tart was Aang's favorite food, which was evident when he discovered it in the Great Divide.