In Houma, Linfen, Ruicheng and other places in southern Shanxi, there is a kind of food with unique flavor, which is called "bubble cake" by local people, that is, bubble fried cake. Bubble cake is a kind of fried cake with many bulging bubbles on its surface, so people named it bubble cake according to its appearance. The materials of the cake are simple, with white flour, lard, sugar, dried tangerine peel and spices as raw materials, and the production process is more complicated. It has to go through several processes, such as hot noodles, stuffing and frying. Every working procedure has strict procedures. After the oil cake is fished out of the oil pan, it looks like a peony flower in bud, soaked in silver floc, slightly yellow in white, and tastes sweet, crisp and refreshing. The "Queen Mother's Imperial Cake" made by Qu Zhiming, a master chef in houma city, is crystal clear, crisp and sweet. This kind of food was originally used exclusively by Empress Dowager Cixi in the late Qing Dynasty, and was made of more than ten kinds of precious Chinese medicines such as ginseng, codonopsis pilosula and astragalus. Stir-fried with sugar, roses, cherries and walnuts. It is not only sweet and delicious, but also has the effects of nourishing yin and tonifying kidney and prolonging life.