Steamed breads, or called mantou, are one of the representative Chinese staple foods. Made from flour and water, steamed breads are fermented and steamed. Mantou look smooth from the outside with textures vary according to the formulation. Although mantou are usually plain, more and more variants are developed. To answer the needs of the market, mantou of all kinds of flavors hit the store shelves. For example, bicolored steamed bread, that is, two doughs of different flavors, such as chocolate, berries, taro, brown sugar and so on, are rolled together. The clear layers and diverse textures can be formed through different methods.