Crystal cake is one of the traditional desserts in Weinan city of eastern Shaanxi, China. It has more than 800 years of history. Crystal cake was first invented in Xiagui during the Song Dynasty, then it spread throughout the region. It gets its name from its filling, which is glittering and translucent, like crystal.
The crust is made with wheat flour, starch and oil, the filling is a mixture of granulated sugar, lard, and pounded rock candy, candied fruits and nuts.
In southern China, small pastries with a translucent crust made with wheat starch as a main component, and filled with sweet bean paste, are also called "crystal cake".