The cake trough is made of red elm wood. Red elm wood has straight texture, clear patterns, good wood elasticity, moisture resistance and corrosion resistance, and is specially used for making cakes. Da Gao is a kind of delicacy, similar to rice cakes, glutinous rice cakes, and glutinous rice cakes. It is a special snack of Han, Buyi, Tujia, Korean and other ethnic groups. It is made from steamed glutinous rice and beaten repeatedly. food.