Wu Da Lang cook cakes are steamed buns. Since the Song Dynasty, steamed cakes have been renamed cookcakes. The answer has been revealed: the cooking cakes sold by Wu Da Lang are actually steamed cakes, similar to today's steamed buns. That is to say, the cook cakes sold by Wudalang are actually steamed cakes, similar to today's steamed buns, except that they may be slightly different in shape. Liu Xi of the Eastern Han Dynasty "interpretation of the name" of the cake to do the explanation: "cake, and also, ulcer wheat to make the merger also." Cake is the meaning of the merger, the food formed by mixing water and flour together was first called cake.

Records about cooking cakes:

"Light yellow color miscellany" records: "Where the surface for the eating utensil, all for the cake; so the fire and eaters, called for the burning cake; water boil [yuè cooking] and eaters, called for the soup cake; steamer and eaters, called for the steamed cake. Tokyo Dreaming Records" records: cooking cakes are not ordinary steamed bread can be compared, there are "oil and honey steamed cake", "scales steamed cake", "thousand-layer steamed cake", etc., of which the "Thousand layer steamed cake" is a roll or lasagna, there is no way to prove.