The dish is prepared in two steps. First, the flour is cooked in advance, often by stir-frying. When a customer orders the dish, hot water is poured into a bowl containing the flour(s) to create a paste-like mush, which is served with white and/or brown sugar and
sweet osmanthus jam (). The sweet osmanthus plant is not native to
northern China. Traditionally, the skill of the server was judged on several factors and one of them is regarding the resulting mush: the most skillful server would be able to create the mush so thick that when a chopstick is inserted into the mush it remains vertical, while at the same time, the mush remains fluid. Other criteria for the servers' skills included the ability not to splash any hot water outside the bowl and spill out any flour, because traditionally, all ingredients are placed in a bowl into which is poured boiling water from a special copper kettle with a long, dragon-shaped spout called (), and special skills were needed to handle this equipment. The ingredients are then stirred together and the
chatang is eaten with a spoon.
Seasoned millet mush Seasoned
millet mush () in northern China is a savoury flour gruel. It is made using only
millet flour rather than a combination of
sorghum and
millet flour. Rather than sweet osmanthus sauce and sugar, it is seasoned with
sesame paste, ground
Sichuan peppercorns, and salt. In Fujian and Taiwan, the mush () is a sweet snack made with
wheat flour and seasoned with sugar and sesame seeds. File:Hokkien miancha dry.jpg|Dry Fujian-style
miancha flour File:Hokkien miancha prepared.jpg|Prepared Fujian-style sweet
miancha gruel
Seasoned oily flour mush Seasoned oily flour mush () is a variety of seasoned flour mush made by stir-frying, or sometimes pan-frying, the flour with animal fat, typically beef fat. Beef
bone marrow may also be added. After frying, it is served in the same manner as seasoned flour mush. ==Kettle==